DIGITAL ISLAND INC
S-8, 2000-01-25
TELEPHONE COMMUNICATIONS (NO RADIOTELEPHONE)
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<PAGE>

   As filed with the Securities and Exchange Commission on January 25, 2000
                                               Registration No. 333-____________
================================================================================


                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                   _________

                                   FORM S-8
                            REGISTRATION STATEMENT
                                     Under
                          The Securities Act of 1933

                                   _________

                             DIGITAL ISLAND, INC.
            (Exact name of registrant as specified in its charter)

             Delaware                              68-0322824
      (State or other jurisdiction      (IRS Employer Identification No.)
    of incorporation or organization)

                         45 Fremont Street, Suite 1200
                            San Francisco, CA 94105
              (Address of principal executive offices) (Zip Code)

                                   _________

                   SANDPIPER NETWORKS, INC. 1997 STOCK PLAN
                           1999 STOCK INCENTIVE PLAN
                       1999 EMPLOYEE STOCK PURCHASE PLAN
                           (Full title of the Plan)

                                   _________

                                 T.L. Thompson
                            Chief Financial Officer
                             Digital Island, Inc.
                         45 Fremont Street, Suite 1200
                           San Francisco, CA  94105
                    (Name and address of agent for service)
                                (415) 738-4100
         (Telephone number, including area code, of agent for service)

                                   _________

                        CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
====================================================================================================================================
                                                                   Proposed             Proposed
                                            Amount to be       Maximum Offering      Maximum Aggregate          Amount of
 Title of Securities to be Registered       Registered(1)      Price per Share       Offering Price(2)       Registration Fee
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                         <C>                <C>                   <C>                    <C>
 Sandpiper Networks, Inc. 1997 Stock Plan
 ----------------------------------------
 Common Stock, $0.001 par value              3,035,165 shares      $ 5.55(2)          $ 16,845,166(2)            $ 4,447.13

 Digital Island, Inc. 1999 Employee Stock
 ----------------------------------------
 Purchase Plan
 -------------
 Common Stock, $0.001 par value                500,000 shares      $85.75(3)          $ 42,875,000(3)            $11,319

 Digital Island, Inc. 1999 Stock Incentive
 -----------------------------------------
 Plan
 ----
 Common Stock, $0.001 par value              2,000,000 shares      $85.75(3)          $171,500,000(3)            $45,276
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                     Aggregate Registration
                                                                                                 Fee:             $61,042.13
====================================================================================================================================
</TABLE>

(1)  This Registration Statement shall also cover any additional shares of
     Common Stock which become issuable under the Sandpiper Networks, Inc. 1997
     Stock Plan, and the Digital Island, Inc. 1999 Employee Stock Purchase Plan
     and 1999 Stock Incentive Plan by reason of any stock dividend, stock split,
     recapitalization or other similar transaction effected without the
     Registrant's receipt of consideration which results in an increase in the
     number of the outstanding shares of Registrant's Common Stock.

(2)  Calculated solely for purposes of this offering under Rule 457(h) of the
     Securities Act of 1933, as amended, on the basis of the weighted average
     exercise price of the outstanding options.

(3)  Calculated solely for purposes of this offering under Rule 457(h) of the
     Securities Act of 1933, as amended, (the "1933 Act") on the basis of the
     average of the high and low selling prices of Registrant's Common Stock on
     January 21, 2000 as reported by the Nasdaq National Market.
<PAGE>

                                    PART II

              Information Required in the Registration Statement


Item 3. Incorporation of Documents by Reference
        ---------------------------------------

             Digital Island, Inc. (the "Registrant") hereby incorporates by
reference into this Registration Statement the following documents previously
filed with the Securities and Exchange Commission (the "Commission"):

        (a)  The Registrant's Registration Statement No. 333-72039 on Form S-1
             filed with the Commission on April 26, 1999, as amended on Forms
             S-1/A filed with the Commission on June 7, 1999, June 9, 1999, and
             June 24, 1999, respectively;

        (b)  The Registrant's Annual Report on Form 10-K for the fiscal year
             ended September 30, 1999 filed with the Commission on December 28,
             1999 pursuant to Section 13 of the Securities Exchange Act of 1934,
             as amended (the "1934 Act");

        (c)  The Registrant's Current Report on Form 8-K filed with the
             Commission on January 5, 2000;

        (d)  The Registrant's prospectus filed with the Commission pursuant to
             Rule 424(a) promulgated under the Securities Act of 1933, as
             amended (the "1933 Act"), in connection with the Registrant's
             Registration Statement No. 333-72039, in which there is set forth
             the audited financial statements for the Registrant's fiscal year
             ended September 30, 1999; and

        (e)  The Registrant's Registration Statement No. 000-26283 on Form 8-A
             filed with the Commission on June 7, 1999 pursuant to Section 12(b)
             of the Securities Exchange Act of 1934 (the "Exchange Act"), in
             which there is described the terms, rights and provisions
             applicable to the Registrant's outstanding Common Stock.

             All reports and definitive proxy or information statements filed
pursuant to Section 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of
1934, as amended (the "1934 Act") after the date of this Registration Statement
and prior to the filing of a post-effective amendment which indicates that all
securities offered hereby have been sold or which de-registers all securities
then remaining unsold shall be deemed to be incorporated by reference into this
Registration Statement and to be a part hereof from the date of filing of such
documents. Any statement contained in a document incorporated or deemed to be
incorporated by reference herein shall be deemed to be modified or superseded
for purposes of this Registration Statement to the extent that a statement
contained herein or in any subsequently filed document which also is deemed to
be incorporated by reference herein modifies or supersedes such statement. Any
such statement so modified or superseded shall not be deemed, except as so
modified or superseded, to constitute a part of this Registration Statement.

Item 4. Description of Securities
        --------------------------

             Not Applicable

                                      II-1
<PAGE>

Item 5. Interests of Named Experts and Counsel
        --------------------------------------

             Not Applicable.

Item 6. Indemnification of Directors and Officers
        -----------------------------------------

        Section 145 of the Delaware General Corporation Law authorizes a court
to award or a corporation's Board of Directors to grant indemnification to
directors and officers in terms sufficiently broad to permit such
indemnification under certain circumstances for liabilities (including
reimbursement for expenses incurred) arising under the Securities Act of 1933,
as amended (the "Securities Act"). Insofar as indemnification for liabilities
arising under the Securities Act may be permitted to directors, officers and
controlling persons of the Registrant pursuant to the foregoing provisions, the
Registrant has been advised that in the opinion of the Securities and Exchange
Commission such indemnification is against public policy as expressed in the
Securities Act and is, therefore, unenforceable. Article VII, Section 6, of the
Registrant's Bylaws provides for mandatory indemnification of its directors and
officers and permissible indemnification of employees and other agents to the
maximum extent permitted by the Delaware General Corporation Law. The
Registrant's Amended and Restated Certificate of Incorporation (the "Certificate
of Incorporation") provides that, pursuant to Delaware law, its directors shall
not be liable for monetary damages for breach of their fiduciary duty as
directors to the Company or its stockholders. This provision in the Certificate
of Incorporation does not eliminate the fiduciary duty of the directors, and in
appropriate circumstances equitable remedies such as injunctive or other forms
of non-monetary relief will remain available under Delaware law. In addition,
each director will continue to be subject to liability for breach of the
director's duty of loyalty to the Company for acts or omissions not in good
faith or involving intentional misconduct, for knowing violations of law, for
actions leading to improper personal benefit to the director, and for payment of
dividends or approval of stock repurchases or redemptions that are unlawful
under Delaware law. The provision also does not affect a director's
responsibilities under any other law, such as the federal securities laws or
state or federal environmental laws. The Registrant has entered into Indemnity
Agreements with its officers and directors, a form of which was previously filed
with the Securities and Exchange Commission as an exhibit to the Registrant's
Registration Statement on Form S-1 (No. 333-77039). The Indemnification
Agreements provide the Registrant's officers and directors with further
indemnification to the maximum extent permitted by the Delaware General
Corporation Law. The Registrant also maintains directors and officers
liabilities insurance.

Item 7. Exemption from Registration Claimed
        -----------------------------------

             Not Applicable.

Item 8. Exhibits
        --------

Exhibit Number      Exhibit
- --------------      -------

      4             Instruments Defining the Rights of Stockholders. Reference
                    is made to Registrant's Registration Statement No. 000-26283
                    on Form 8-A, together with any exhibits thereto, which are
                    incorporated herein by reference pursuant to Item 3(c) to
                    this Registration Statement.
      5             Opinion and consent of Brobeck, Phleger & Harrison LLP.
     23.1           Consent of PricewaterhouseCoopers LLP, Independent
                    Accountants.
     23.2           Consent of Brobeck, Phleger & Harrison LLP is contained in
                    Exhibit 5.
     24             Power of Attorney. Reference is made to page II-4 of this
                    Registration Statement.
     99.1           Sandpiper Networks, Inc. 1997 Stock Plan.
     99.2           Form of Stock Option Agreement.
     99.3           Form of Stock Option Assumption Agreement.
     99.4*          1999 Stock Incentive Plan
     99.5*          1999 Employee Stock Purchase Plan

* Exhibits 99.4 and 99.5 are incorporated herein by reference to Exhibits 99.1
  and 99.11, respectively, of Registrant's Registration Statement No. 333-81709
  on Form S-8, filed with the Commission on June 28, 1999.

                                      II-2
<PAGE>

Item 9. Undertakings
        ------------

             A.   The undersigned Registrant hereby undertakes: (1) to file,
during any period in which offers or sales are being made, a post-effective
amendment to this Registration Statement: (i) to include any prospectus required
by Section 10(a)(3) of the 1933 Act, (ii) to reflect in the prospectus any facts
or events arising after the effective date of this Registration Statement (or
the most recent post-effective amendment thereof) which, individually or in the
aggregate, represent a fundamental change in the information set forth in this
Registration Statement and (iii) to include any material information with
respect to the plan of distribution not previously disclosed in this
Registration Statement or any material change to such information in this
Registration Statement; provided, however, that clauses (1)(i) and (1)(ii) shall
not apply if the information required to be included in a post-effective
amendment by those clauses is contained in periodic reports filed by the
Registrant pursuant to Section 13 or Section 15(d) of the 1934 Act that are
incorporated by reference into this Registration Statement; (2) that for the
purpose of determining any liability under the 1933 Act each such post-effective
amendment shall be deemed to be a new registration statement relating to the
securities offered therein and the offering of such securities at that time
shall be deemed to be the initial bona fide offering thereof; and (3) to remove
from registration by means of a post-effective amendment any of the securities
being registered which remain unsold at the termination of the Sandpiper
Networks, Inc. 1997 Stock Plan, and the Digital Island, Inc. 1999 Employee
Stock Purchase Plan and 1999 Stock Incentive Plan.

             B.   The undersigned Registrant hereby undertakes that, for
purposes of determining any liability under the 1933 Act, each filing of the
Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
1934 Act that is incorporated by reference into this Registration Statement
shall be deemed to be a new registration statement relating to the securities
offered therein, and the offering of such securities at that time shall be
deemed to be the initial bona fide offering thereof.

             C.   Insofar as indemnification for liabilities arising under the
1933 Act may be permitted to directors, officers or controlling persons of the
Registrant pursuant to the indemnification provisions summarized in Item 6 or
otherwise, the Registrant has been advised that, in the opinion of the
Commission, such indemnification is against public policy as expressed in the
1933 Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
Registrant of expenses incurred or paid by a director, officer, or controlling
person of the Registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the 1933 Act and
will be governed by the final adjudication of such issue.

                                      II-3
<PAGE>

                                  SIGNATURES

          Pursuant to the requirements of the Securities Act of 1933, as
amended, the Registrant certifies that it has reasonable grounds to believe that
it meets all of the requirements for filing on Form S-8, and has duly caused
this Registration Statement to be signed on its behalf by the undersigned,
thereunto duly authorized, in the City of San Francisco, State of California on
this 25th day of January, 2000.

                                        Digital Island, Inc.



                                        By:   /s/Ruann Ernst
                                            ------------------------------------
                                              Ruann Ernst
                                              Chief Executive Officer


                               POWER OF ATTORNEY
                               -----------------

KNOW ALL PERSONS BY THESE PRESENTS:

          That the undersigned officers and directors of Digital Island, Inc., a
Delaware corporation, do hereby constitute and appoint Ruann Ernst and T.L.
Thompson, and each of them, the lawful attorneys-in-fact and agents with full
power and authority to do any and all acts and things and to execute any and all
instruments which said attorneys and agents, and any one of them, determine may
be necessary or advisable or required to enable said corporation to comply with
the Securities Act of 1933, as amended, and any rules or regulations or
requirements of the Securities and Exchange Commission in connection with this
Registration Statement. Without limiting the generality of the foregoing power
and authority, the powers granted include the power and authority to sign the
names of the undersigned officers and directors in the capacities indicated
below to this Registration Statement, to any and all amendments, both pre-
effective and post-effective, and supplements to this Registration Statement,
and to any and all instruments or documents filed as part of or in conjunction
with this Registration Statement or amendments or supplements thereof, and each
of the undersigned hereby ratifies and confirms that all said attorneys and
agents, or any one of them, shall do or cause to be done by virtue hereof. This
Power of Attorney may be signed in several counterparts.

          IN WITNESS WHEREOF, each of the undersigned has executed this Power of
Attorney as of the date indicated.

          Pursuant to the requirements of the Securities Act of 1933, as
amended, this Registration Statement has been signed below by the following
persons in the capacities and on the dates indicated.

Signature                           Title                            Date
- ---------                           -----                            ----


/s/Ruann Ernst           Chief Executive Officer               January 25, 2000
- -----------------------  and Director
Ruann Ernst              (Principal Executive Officer)

/s/ Leo S. Spiegel       President and Director                January 25, 2000
- -----------------------
Leo S. Spiegel                                      II-4
<PAGE>

/s/T.L. Thompson         Chief Financial Officer and Secretary  January 25, 2000
- -----------------------  (Principal Financial and
T.L. Thompson            Accounting Officer)


/s/Charlie Bass          Director                               January 25, 2000
- -----------------------
Charlie Bass


/s/Christos Cotsakos     Director                               January 25, 2000
- -----------------------
Christos Cotsakos


/s/Marcelo A. Gumucio    Director                               January 25, 2000
- -----------------------
Marcelo A. Gumucio


/s/Cliff Higgerson       Director                               January 25, 2000
- -----------------------
Cliff Higgerson


/s/Shanhan Soghikian     Director                               January 25, 2000
- -----------------------
Shahan Soghikian

/s/Bradford Jones        Director                               January 25, 2000
- -----------------------
G. Bradford Jones

/s/Robert Kibble         Director                               January 25, 2000
- -----------------------
Robert Kibble
                                      II-5
<PAGE>

                                 EXHIBIT INDEX

Exhibit Number      Exhibit
- --------------      -------

     4              Instruments Defining the Rights of Stockholders. Reference
                    is made to Registrant's Registration Statement No. 000-26283
                    on Form 8-A, together with any exhibits thereto, which are
                    incorporated herein by reference pursuant to Item 3(c) to
                    this Registration Statement.
     5              Opinion and consent of Brobeck, Phleger & Harrison LLP.
    23.1            Consent of PricewaterhouseCoopers LLP, Independent
                    Accountants.
    23.2            Consent of Brobeck, Phleger & Harrison LLP is contained in
                    Exhibit 5.
    24              Power of Attorney. Reference is made to page II-4 of this
                    Registration Statement.
    99.1            Sandpiper Networks, Inc. 1997 Stock Plan.
    99.2            Form of Stock Option Agreement.
    99.3            Form of Stock Option Assumption Agreement.
    99.4*           1999 Stock Incentive Plan
    99.5*           1999 Employee Stock Purchase Plan


* Exhibits 99.4 and 99.5 are incorporated herein by reference to Exhibits 99.1
  and 99.11, respectively, of Registrant's Registration Statement No. 333-81709
  on Form S-8, filed with the Commission on June 28, 1999.

<PAGE>

                                                                       EXHIBIT 5

            OPINION AND CONSENT OF BROBECK, PHLEGER & HARRISON LLP


                               January 25, 2000


Digital Island, Inc.
45 Fremont Street, Suite 1200
San Francisco, Ca 94105

          Re:  Digital Island, Inc.-Registration Statement for Offering of an
               Aggregate of 5,535,165 Shares of Common Stock
               --------------------------------------------------------------

Dear Ladies and Gentlemen:

          We have acted as counsel to Digital Island, Inc. a Delaware
corporation (the "Company"), in connection with the registration on Form S-8
(the "Registration Statement") under the Securities Act of 1933, as amended, of
5,535,165 shares of common stock for issuance (the "Shares") under the Sandpiper
Networks, Inc. 1997 Stock Plan and the Digital Island, Inc. 1999 Employee Stock
Purchase Plan and 1999 Stock Incentive Plan (together, the "Plans").

          This opinion is being furnished in accordance with the requirements of
Item 8 of Form S-8 and Item 601(b)(5)(i) of Regulation S-K.

          We have reviewed the Company's charter documents and the corporate
proceedings taken by the Company in connection with the assumption of the
Sandpiper Networks, Inc. 1997 Stock Plan and the options outstanding thereunder
and with the establishment of the 1999 Employee Stock Purchase Plan and 1999
Stock Incentive Plan. Based on such review, we are of the opinion that, if, as
and when the Shares have been issued and sold (and the consideration therefor
received) pursuant to (a) the provisions of stock option agreements duly
authorized under the 1999 Stock Incentive Plan and the Sandpiper Networks, Inc.
1997 Stock Plan and in accordance with the Registration Statement or (b) the
provisions of duly authorized stock purchase rights issued in accordance with
the 1999 Employee Stock Purchase Plan and in accordance with the Registration
Statement, such Shares will be duly authorized, legally issued, fully paid and
nonassessable.

          We consent to the filing of this opinion letter as Exhibit 5 to the
Registration Statement.

          This opinion letter is rendered as of the date first written above and
we disclaim any obligation to advise you of facts, circumstances, events or
developments which hereafter may be brought to our attention and which may
alter, affect or modify the opinion expressed herein. Our opinion is expressly
limited to the matters set forth above and we render no opinion, whether by
implication or otherwise, as to any other matters relating to the Company, the
Plans or the Shares.


                              Very truly yours,


                              /s/Brobeck Phleger & Harrison LLP
                              --------------------------------------------
                              BROBECK, PHLEGER & HARRISON LLP


<PAGE>

                                                                    EXHIBIT 23.1

        CONSENT OF PRICEWATERHOUSESCOOPERS LLP, INDEPENDENT ACCOUNTANTS


We consent to the incorporation by reference in this Registration Statement on
Form S-8 of our report dated October 29, 1999, except as to Note 16, which is as
of December 8, 1999, relating to the consolidated financial statements and
financial statement schedules of Digital Island, Inc., which report appears in
Digital Island, Inc.'s Annual Report on Form 10-K for the year ended September
30, 1999.



                                              /s/PricewaterhouseCoopers LLP
                                              -----------------------------
                                              PricewaterhouseCoopers LLP



San Francisco, California
January 25, 2000

<PAGE>

                                                                    EXHIBIT 99.1

                   SANDPIPER NETWORKS, INC. 1997 STOCK PLAN
<PAGE>

                           SANDPIPER NETWORKS, INC.

                                1997 STOCK PLAN


    1.   Purposes of the Plan. The purposes of this Stock Plan are to attract
         --------------------
and retain the best available personnel for positions of substantial
responsibility, to provide additional incentive to Employees, Directors and
Consultants and to promote the success of the Company's business. Options
granted under the Plan may be Incentive Stock Options or Nonstatutory Stock
Options, as determined by the Administrator at the time of grant. Stock Purchase
Rights may also be granted under the Plan.

    2.   Definitions. As used herein, the following definitions shall apply:
         -----------

         (a) "Administrator" means the Board or any of its Committees as shall
              -------------
be administering the Plan in accordance with Section 4 hereof.

         (b) "Applicable Laws" means the requirements relating to the
              ---------------
administration of stock option plans under U.S. state corporate laws, U.S.
federal and state securities laws, the Code, any stock exchange or quotation
system on which the Common Stock is listed or quoted and the applicable laws of
any other country or jurisdiction where Options or Stock Purchase Rights are
granted under the Plan.

         (c) "Board" means the Board of Directors of the Company.
              -----

         (d) "Code" means the Internal Revenue Code of 1986, as amended.
              ----

         (e) "Committee" means a committee of Directors appointed by the Board
              ---------
in accordance with Section 4 hereof.

         (f) "Common Stock" means the Common Stock of the Company.
              ------------

         (g) "Company" means SANDPIPER NETWORKS, INC., a California corporation.
              -------

         (h)  "Consultant" means any person who is engaged by the Company or any
               ----------
Parent or Subsidiary to render consulting or advisory services to such entity.

         (i)  "Director" means a member of the Board of Directors of the
               --------
Company.

         (j)  "Disability" means total and permanent disability as defined in
               ----------
Section 22(e)(3) of the Code.
<PAGE>

         (k) "Employee" means any person, including Officers and Directors,
              --------
employed by the Company or any Parent or Subsidiary of the Company. A Service
Provider shall not cease to be an Employee in the case of (i) any leave of
absence approved by the Company or (ii) transfers between locations of the
Company or between the Company, its Parent, any Subsidiary, or any successor.
For purposes of Incentive Stock Options, no such leave may exceed ninety days,
unless reemployment upon expiration of such leave is guaranteed by statute or
contract. If reemployment upon expiration of a leave of absence approved by the
Company is not so guaranteed, on the 181st day of such leave any Incentive Stock
Option held by the Optionee shall cease to be treated as an Incentive Stock
Option and shall be treated for tax purposes as a Nonstatutory Stock Option.
Neither service as a Director nor payment of a director's fee by the Company
shall be sufficient to constitute "employment" by the Company.

         (l) "Exchange Act" means the Securities Exchange Act of 1934, as
              ------------
amended.

         (m) "Fair Market Value" means, as of any date, the value of Common
              -----------------
Stock determined as follows:

             (i)   If the Common Stock is listed on any established stock
exchange or a national market system, including without limitation the Nasdaq
National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, its
Fair Market Value shall be the closing sales price for such stock (or the
closing bid, if no sales were reported) as quoted on such exchange or system for
the last market trading day prior to the time of determination, as reported in
The Wall Street Journal or such other source as the Administrator deems
reliable;

             (ii)  If the Common Stock is regularly quoted by a recognized
securities dealer but selling prices are not reported, its Fair Market Value
shall be the mean between the high bid and low asked prices for the Common Stock
on the last market trading day prior to the day of determination; or

             (iii) In the absence of an established market for the Common Stock,
the Fair Market Value thereof shall be determined in good faith by the
Administrator.

         (n) "Incentive Stock Option" means an Option intended to qualify as an
              ----------------------
incentive stock option within the meaning of Section 422 of the Code.

         (o) "Nonstatutory Stock Option" means an Option not intended to qualify
              -------------------------
as an Incentive Stock Option.

         (p) "Officer" means a person who is an officer of the Company within
              -------
the meaning of Section 16 of the Exchange Act and the rules and regulations
promulgated thereunder.

         (q) "Option" means a stock option granted pursuant to the Plan.
              ------
<PAGE>

         (r)  "Option Agreement" means a written or electronic agreement between
               ----------------
the Company and an Optionee evidencing the terms and conditions of an individual
Option grant. The Option Agreement is subject to the terms and conditions of the
Plan.

         (s)  "Option Exchange Program" means a program whereby outstanding
               -----------------------
Options are exchanged for Options with a lower exercise price.

         (t)  "Optioned Stock" means the Common Stock subject to an Option or a
               --------------
Stock Purchase Right.

         (u)  "Optionee" means the holder of an outstanding Option or Stock
               --------
Purchase Right granted under the Plan.

         (v)  "Parent" means a "parent corporation," whether now or hereafter
               ------
existing, as defined in Section 424(e) of the Code.

         (w)  "Plan" means this 1997 Stock Plan.
               ----

         (x)  "Restricted Stock" means shares of Common Stock acquired pursuant
               ----------------
to a grant of a Stock Purchase Right under Section 11 below.

         (y)  "Section 16(b)" means Section 16(b) of the Securities Exchange Act
               -------------
of 1934, as amended.

         (z)  "Service Provider" means an Employee, Director or Consultant.
               ----------------

         (aa) "Share" means a share of the Common Stock, as adjusted in
               -----
accordance with Section 12 below.

         (bb) "Stock Purchase Right" means a right to purchase Common Stock
               --------------------
pursuant to Section 11 below.

         (cc) "Subsidiary" means a "subsidiary corporation," whether now or
               ----------
hereafter existing, as defined in Section 424(f) of the Code.

    3.   Stock Subject to the Plan. Subject to the provisions of Section 12 of
         -------------------------
the Plan, the maximum aggregate number of Shares which may be subject to option
and sold under the Plan is 379,007 Shares. The Shares may be authorized but
unissued, or reacquired Common Stock.

         If an Option or Stock Purchase Right expires or becomes unexercisable
without having been exercised in full, or is surrendered pursuant to an Option
Exchange Program, the unpurchased Shares which were subject thereto shall become
available for future grant or sale
<PAGE>

under the Plan (unless the Plan has terminated). However, Shares that have
actually been issued under the Plan, upon exercise of either an Option or Stock
Purchase Right, shall not be returned to the Plan and shall not become available
for future distribution under the Plan, except that if Shares of Restricted
Stock are repurchased by the Company at their original purchase price, such
Shares shall become available for future grant under the Plan.

    4.   Administration of the Plan.
         --------------------------

         (a) Administrator. The Plan shall be administered by the Board or a
             -------------
Committee appointed by the Board, which Committee shall be constituted to comply
with Applicable Laws.

         (b) Powers of the Administrator. Subject to the provisions of the Plan
             ---------------------------
and, in the case of a Committee, the specific duties delegated by the Board to
such Committee, and subject to the approval of any relevant authorities, the
Administrator shall have the authority in its discretion:

             (i)    to determine the Fair Market Value;

             (ii)   to select the Service Providers to whom Options and Stock
Purchase Rights may from time to time be granted hereunder;

             (iii)  to determine the number of Shares to be covered by each such
award granted hereunder;

             (iv)   to approve forms of agreement for use under the Plan;

             (v)    to determine the terms and conditions, of any Option or
Stock Purchase Right granted hereunder. Such terms and conditions include, but
are not limited to, the exercise price, the time or times when Options or Stock
Purchase Rights may be exercised (which may be based on performance criteria),
any vesting acceleration or waiver of forfeiture restrictions, and any
restriction or limitation regarding any Option or Stock Purchase Right or the
Common Stock relating thereto, based in each case on such factors as the
Administrator, in its sole discretion, shall determine;

             (vi)   to determine whether and under what circumstances an Option
may be settled in cash under subsection 9(e) instead of Common Stock;

             (vii)  to reduce the exercise price of any Option to the then
current Fair Market Value if the Fair Market Value of the Common Stock covered
by such Option has declined since the date the Option was granted;

             (viii) to initiate an Option Exchange Program;
<PAGE>

             (ix) to prescribe, amend and rescind rules and regulations relating
to the Plan, including rules and regulations relating to sub-plans established
for the purpose of qualifying for preferred tax treatment under foreign tax
laws;

             (x)  to allow Optionees to satisfy withholding tax obligations by
electing to have the Company withhold from the Shares to be issued upon exercise
of an Option or Stock Purchase Right that number of Shares having a Fair Market
Value equal to the amount required to be withheld.  The Fair Market Value of the
Shares to be withheld shall be determined on the date that the amount of tax to
be withheld is to be determined.  All elections by Optionees to have Shares
withheld for this purpose shall be made in such form and under such conditions
as the Administrator may deem necessary or advisable; and

             (xi) to construe and interpret the terms of the Plan and awards
granted pursuant to the Plan.

         (c) Effect of Administrator's Decision. All decisions, determinations
             ----------------------------------
and interpretations of the Administrator shall be final and binding on all
Optionees.

    5.   Eligibility.
         -----------

         (a) Nonstatutory Stock Options and Stock Purchase Rights may be granted
to Service Providers. Incentive Stock Options may be granted only to Employees.

         (b) Each Option shall be designated in the Option Agreement as either
an Incentive Stock Option or a Nonstatutory Stock Option. However,
notwithstanding such designation, to the extent that the aggregate Fair Market
Value of the Shares with respect to which Incentive Stock Options are
exercisable for the first time by the Optionee during any calendar year (under
all plans of the Company and any Parent or Subsidiary) exceeds $100,000, such
Options shall be treated as Nonstatutory Stock Options. For purposes of this
Section 5(b), Incentive Stock Options shall be taken into account in the order
in which they were granted. The Fair Market Value of the Shares shall be
determined as of the time the Option with respect to such Shares is granted.

         (c) Neither the Plan nor any Option or Stock Purchase Right shall
confer upon any Optionee any right with respect to continuing the Optionee's
relationship as a Service Provider with the Company, nor shall it interfere in
any way with his or her right or the Company's right to terminate such
relationship at any time, with or without cause.

    6.   Term of Plan. The Plan shall become effective upon its adoption by the
         ------------
Board. It shall continue in effect for a term of ten (10) years unless sooner
terminated under Section 14 of the Plan.
<PAGE>

    7.   Term of Option. The term of each Option shall be stated in the Option
         --------------
Agreement; provided, however, that the term shall be no more than ten (10) years
from the date of grant thereof. In the case of an Incentive Stock Option granted
to an Optionee who, at the time the Option is granted, owns stock representing
more than ten percent (10%) of the voting power of all classes of stock of the
Company or any Parent or Subsidiary, the term of the Option shall be five (5)
years from the date of grant or such shorter term as may be provided in the
Option Agreement.

    8.   Option Exercise Price and Consideration.
         ---------------------------------------

         (a) The per share exercise price for the Shares to be issued upon
exercise of an Option shall be such price as is determined by the Administrator,
but shall be subject to the following:

             (i)   In the case of an Incentive Stock Option

                   (A) granted to an Employee who, at the time of grant of such
Option, owns stock representing more than ten percent (10%) of the voting power
of all classes of stock of the Company or any Parent or Subsidiary, the exercise
price shall be no less than 110% of the Fair Market Value per Share on the date
of grant.

                   (B) granted to any other Employee, the per Share exercise
price shall be no less than 100% of the Fair Market Value per Share on the date
of grant.

             (ii)  In the case of a Nonstatutory Stock Option

                   (A) granted to a Service Provider who, at the time of grant
of such Option, owns stock representing more than ten percent (10%) of the
voting power of all classes of stock of the Company or any Parent or Subsidiary,
the exercise price shall be no less than 110% of the Fair Market Value per Share
on the date of grant.

                   (B) granted to any other Service Provider, the per Share
exercise price shall be no less than 85% of the Fair Market Value per Share on
the date of grant.

             (iii) Notwithstanding the foregoing, Options may be granted with a
per Share exercise price other than as required above pursuant to a merger or
other corporate transaction.

         (b) The consideration to be paid for the Shares to be issued upon
exercise of an Option, including the method of payment, shall be determined by
the Administrator (and, in the case of an Incentive Stock Option, shall be
determined at the time of grant). Such consideration may consist of (1) cash,
(2) check, (3) promissory note, (4) other Shares which (x) in the case of Shares
acquired upon exercise of an Option, have been owned by the Optionee for more
than six months on the date of surrender, and (y) have a Fair Market Value on
the date of surrender equal to the aggregate exercise price of the Shares as to
which such Option shall be exercised, (5)
<PAGE>

consideration received by the Company under a cashless exercise program
implemented by the Company in connection with the Plan, or (6) any combination
of the foregoing methods of payment. In making its determination as to the type
of consideration to accept, the Administrator shall consider if acceptance of
such consideration may be reasonably expected to benefit the Company.

    9.   Exercise of Option.
         ------------------

         (a) Procedure for Exercise; Rights as a Shareholder. Any Option granted
             -----------------------------------------------
hereunder shall be exercisable according to the terms hereof at such times and
under such conditions as determined by the Administrator and set forth in the
Option Agreement. Except in the case of Options granted to Officers, Directors
and Consultants, Options shall become exercisable at a rate of no less than 20%
per year over five (5) years from the date the Options are granted. Unless the
Administrator provides otherwise, vesting of Options granted hereunder shall be
tolled during any unpaid leave of absence. An Option may not be exercised for a
fraction of a Share.

             An Option shall be deemed exercised when the Company receives: (i)
written or electronic notice of exercise (in accordance with the Option
Agreement) from the person entitled to exercise the Option, and (ii) full
payment for the Shares with respect to which the Option is exercised. Full
payment may consist of any consideration and method of payment authorized by the
Administrator and permitted by the Option Agreement and the Plan. Shares issued
upon exercise of an Option shall be issued in the name of the Optionee or, if
requested by the Optionee, in the name of the Optionee and his or her spouse.
Until the Shares are issued (as evidenced by the appropriate entry on the books
of the Company or of a duly authorized transfer agent of the Company), no right
to vote or receive dividends or any other rights as a shareholder shall exist
with respect to the Shares, notwithstanding the exercise of the Option. The
Company shall issue (or cause to be issued) such Shares promptly after the
Option is exercised. No adjustment will be made for a dividend or other right
for which the record date is prior to the date the Shares are issued, except as
provided in Section 12 of the Plan.

             Exercise of an Option in any manner shall result in a decrease in
the number of Shares thereafter available, both for purposes of the Plan and for
sale under the Option, by the number of Shares as to which the Option is
exercised.

         (b) Termination of Relationship as a Service Provider. If an Optionee
             -------------------------------------------------
ceases to be a Service Provider, such Optionee may exercise his or her Option
within such period of time as is specified in the Option Agreement (of at least
thirty (30) days) to the extent that the Option is vested on the date of
termination (but in no event later than the expiration of the term of the Option
as set forth in the Option Agreement). In the absence of a specified time in the
Option Agreement, the Option shall remain exercisable for three (3) months
following the Optionee's termination. If, on the date of termination, the
Optionee is not vested as to his or her entire Option, the Shares covered by the
unvested portion of the Option shall revert to the Plan. If, after
<PAGE>

termination, the Optionee does not exercise his or her Option within the time
specified by the Administrator, the Option shall terminate, and the Shares
covered by such Option shall revert to the Plan.

         (c) Disability of Optionee. If an Optionee ceases to be a Service
             ----------------------
Provider as a result of the Optionee's Disability, the Optionee may exercise his
or her Option within such period of time as is specified in the Option Agreement
(of at least six (6) months) to the extent the Option is vested on the date of
termination (but in no event later than the expiration of the term of such
Option as set forth in the Option Agreement). In the absence of a specified time
in the Option Agreement, the Option shall remain exercisable for twelve (12)
months following the Optionee's termination. If, on the date of termination, the
Optionee is not vested as to his or her entire Option, the Shares covered by the
unvested portion of the Option shall revert to the Plan. If, after termination,
the Optionee does not exercise his or her Option within the time specified
herein, the Option shall terminate, and the Shares covered by such Option shall
revert to the Plan.

         (d) Death of Optionee. If an Optionee dies while a Service Provider,
             -----------------
the Option may be exercised within such period of time as is specified in the
Option Agreement (of at least six (6) months) to the extent that the Option is
vested on the date of death (but in no event later than the expiration of the
term of such Option as set forth in the Option Agreement) by the Optionee's
estate or by a person who acquires the right to exercise the Option by bequest
or inheritance. In the absence of a specified time in the Option Agreement, the
Option shall remain exercisable for twelve (12) months following the Optionee's
termination. If, at the time of death, the Optionee is not vested as to the
entire Option, the Shares covered by the unvested portion of the Option shall
immediately revert to the Plan. If the Option is not so exercised within the
time specified herein, the Option shall terminate, and the Shares covered by
such Option shall revert to the Plan.

         (e) Buyout Provisions. The Administrator may at any time offer to buy
             -----------------
out for a payment in cash or Shares, an Option previously granted, based on such
terms and conditions as the Administrator shall establish and communicate to the
Optionee at the time that such offer is made.

    10.  Non-Transferability of Options and Stock Purchase Rights. The Options
         --------------------------------------------------------
and Stock Purchase Rights may not be sold, pledged, assigned, hypothecated,
transferred, or disposed of in any manner other than by will or by the laws of
descent or distribution and may be exercised, during the lifetime of the
Optionee, only by the Optionee.

    11.  Stock Purchase Rights.
         ---------------------

         (a) Rights to Purchase. Stock Purchase Rights may be issued either
             ------------------
alone, in addition to, or in tandem with other awards granted under the Plan
and/or cash awards made outside of the Plan. After the Administrator determines
that it will offer Stock Purchase Rights under the Plan, it shall advise the
offeree in writing or electronically of the terms, conditions and restrictions
related to the offer, including the number of Shares that such person shall be
entitled to

<PAGE>

purchase, the price to be paid, and the time within which such person must
accept such offer. The terms of the offer shall comply in all respects with
Section 260.140.42 of Title 10 of the California Code of Regulations. The offer
shall be accepted by execution of a Restricted Stock purchase agreement in the
form determined by the Administrator.

         (b) Repurchase Option. Unless the Administrator determines otherwise,
             -----------------
the Restricted Stock purchase agreement shall grant the Company a repurchase
option exercisable upon the voluntary or involuntary termination of the
purchaser's service with the Company for any reason (including death or
disability). The purchase price for Shares repurchased pursuant to the
Restricted Stock purchase agreement shall be the original price paid by the
purchaser and may be paid by cancellation of any indebtedness of the purchaser
to the Company. The repurchase option shall lapse at such rate as the
Administrator may determine. Except with respect to Shares purchased by
Officers, Directors and Consultants, the repurchase option shall in no case
lapse at a rate of less than 20% per year over five (5) years from the date of
purchase.

         (c) Other Provisions. The Restricted Stock purchase agreement shall
             ----------------
contain such other terms, provisions and conditions not inconsistent with the
Plan as may be determined by the Administrator in its sole discretion.

         (d) Rights as a Shareholder. Once the Stock Purchase Right is
             -----------------------
exercised, the purchaser shall have rights equivalent to those of a shareholder
and shall be a shareholder when his or her purchase is entered upon the records
of the duly authorized transfer agent of the Company. No adjustment shall be
made for a dividend or other right for which the record date is prior to the
date the Stock Purchase Right is exercised, except as provided in Section 12 of
the Plan.
<PAGE>

    12.  Adjustments Upon Changes in Capitalization, Merger or Asset Sale.
         ----------------------------------------------------------------

         (a) Changes in Capitalization. Subject to any required action by the
             -------------------------
shareholders of the Company, the number of shares of Common Stock covered by
each outstanding Option or Stock Purchase Right, and the number of shares of
Common Stock which have been authorized for issuance under the Plan but as to
which no Options or Stock Purchase Rights have yet been granted or which have
been returned to the Plan upon cancellation or expiration of an Option or Stock
Purchase Right, as well as the price per share of Common Stock covered by each
such outstanding Option or Stock Purchase Right, shall be proportionately
adjusted for any increase or decrease in the number of issued shares of Common
Stock resulting from a stock split, reverse stock split, stock dividend,
combination or reclassification of the Common Stock, or any other increase or
decrease in the number of issued shares of Common Stock effected without receipt
of consideration by the Company. The conversion of any convertible securities of
the Company shall not be deemed to have been "effected without receipt of
consideration." Such adjustment shall be made by the Board, whose determination
in that respect shall be final, binding and conclusive. Except as expressly
provided herein, no issuance by the Company of shares of stock of any class, or
securities convertible into shares of stock of any class, shall affect, and no
adjustment by reason thereof shall be made with respect to, the number or price
of shares of Common Stock subject to an Option or Stock Purchase Right.

         (b) Dissolution or Liquidation. In the event of the proposed
             --------------------------
dissolution or liquidation of the Company, the Administrator shall notify each
Optionee as soon as practicable prior to the effective date of such proposed
transaction. The Administrator in its discretion may provide for an Optionee to
have the right to exercise his or her Option or Stock Purchase Right until
fifteen (15) days prior to such transaction as to all of the Optioned Stock
covered thereby, including Shares as to which the Option or Stock Purchase Right
would not otherwise be exercisable. In addition, the Administrator may provide
that any Company repurchase option applicable to any Shares purchased upon
exercise of an Option or Stock Purchase Right shall lapse as to all such Shares,
provided the proposed dissolution or liquidation takes place at the time and in
the manner contemplated. To the extent it has not been previously exercised, an
Option or Stock Purchase Right will terminate immediately prior to the
consummation of such proposed action.

         (c) Merger or Asset Sale. In the event of a merger of the Company with
             --------------------
or into another corporation, or the sale of substantially all of the assets of
the Company, each outstanding Option and Stock Purchase Right shall be assumed
or an equivalent option or right substituted by the successor corporation or a
Parent or Subsidiary of the successor corporation. In the event that the
successor corporation refuses to assume or substitute for the Option or Stock
Purchase Right, the Optionee shall fully vest in and have the right to exercise
the Option or Stock Purchase Right as to all of the Optioned Stock, including
Shares as to which it would not otherwise be vested or exercisable. If an Option
or Stock Purchase Right becomes fully vested and exercisable in lieu of
assumption or substitution in the event of a merger or sale of assets, the
Administrator shall notify the Optionee in writing or electronically that the
Option or Stock Purchase Right shall be fully
<PAGE>

exercisable for a period of fifteen (15) days from the date of such notice, and
the Option or Stock Purchase Right shall terminate upon the expiration of such
period. For the purposes of this paragraph, the Option or Stock Purchase Right
shall be considered assumed if, following the merger or sale of assets, the
option or right confers the right to purchase or receive, for each Share of
Optioned Stock subject to the Option or Stock Purchase Right immediately prior
to the merger or sale of assets, the consideration (whether stock, cash, or
other securities or property) received in the merger or sale of assets by
holders of Common Stock for each Share held on the effective date of the
transaction (and if holders were offered a choice of consideration, the type of
consideration chosen by the holders of a majority of the outstanding Shares);
provided, however, that if such consideration received in the merger or sale of
assets is not solely common stock of the successor corporation or its Parent,
the Administrator may, with the consent of the successor corporation, provide
for the consideration to be received upon the exercise of the Option or Stock
Purchase Right, for each Share of Optioned Stock subject to the Option or Stock
Purchase Right, to be solely common stock of the successor corporation or its
Parent equal in fair market value to the per share consideration received by
holders of Common Stock in the merger or sale of assets.

    13.  Time of Granting Options and Stock Purchase Rights. The date of grant
         --------------------------------------------------
of an Option or Stock Purchase Right shall, for all purposes, be the date on
which the Administrator makes the determination granting such Option or Stock
Purchase Right, or such other date as is determined by the Administrator. Notice
of the determination shall be given to each Service Provider to whom an Option
or Stock Purchase Right is so granted within a reasonable time after the date of
such grant.

    14.  Amendment and Termination of the Plan.
         -------------------------------------

         (a) Amendment and Termination. The Board may at any time amend, alter,
             -------------------------
suspend or terminate the Plan.

         (b) Shareholder Approval. The Board shall obtain shareholder approval
             --------------------
of any Plan amendment to the extent necessary and desirable to comply with
Applicable Laws.

         (c) Effect of Amendment or Termination. No amendment, alteration,
             ----------------------------------
suspension or termination of the Plan shall impair the rights of any Optionee,
unless mutually agreed otherwise between the Optionee and the Administrator,
which agreement must be in writing and signed by the Optionee and the Company.
Termination of the Plan shall not affect the Administrator's ability to exercise
the powers granted to it hereunder with respect to Options granted under the
Plan prior to the date of such termination.

    15.  Conditions Upon Issuance of Shares.
         ----------------------------------

         (a) Legal Compliance. Shares shall not be issued pursuant to the
             ----------------
exercise of an Option unless the exercise of such Option and the issuance and
delivery of such Shares shall
<PAGE>

comply with Applicable Laws and shall be further subject to the approval of
counsel for the Company with respect to such compliance.

         (b) Investment Representations. As a condition to the exercise of an
             --------------------------
Option, the Administrator may require the person exercising such Option to
represent and warrant at the time of any such exercise that the Shares are being
purchased only for investment and without any present intention to sell or
distribute such Shares if, in the opinion of counsel for the Company, such a
representation is required.

    16.  Inability to Obtain Authority. The inability of the Company to obtain
         -----------------------------
authority from any regulatory body having jurisdiction, which authority is
deemed by the Company's counsel to be necessary to the lawful issuance and sale
of any Shares hereunder, shall relieve the Company of any liability in respect
of the failure to issue or sell such Shares as to which such requisite authority
shall not have been obtained.

    17.  Reservation of Shares. The Company, during the term of this Plan,
         ---------------------
shall at all times reserve and keep available such number of Shares as shall be
sufficient to satisfy the requirements of the Plan.

    18.  Shareholder Approval. The Plan shall be subject to approval by the
         --------------------
shareholders of the Company within twelve (12) months after the date the Plan is
adopted. Such shareholder approval shall be obtained in the degree and manner
required under Applicable Laws.

    19.  Information to Optionees and Purchasers. The Company shall provide to
         ---------------------------------------
each Optionee and to each individual who acquires Shares pursuant to the Plan,
not less frequently than annually during the period such Optionee or purchaser
has one or more Options or Stock Purchase Rights outstanding, and, in the case
of an individual who acquires Shares pursuant to the Plan, during the period
such individual owns such Shares, copies of annual financial statements. The
Company shall not be required to provide such statements to key employees whose
duties in connection with the Company assure their access to equivalent
information.

<PAGE>

                                                                    EXHIBIT 99.2

                        FORM OF STOCK OPTION AGREEMENT
<PAGE>

                           SANDPIPER NETWORKS, INC.

                                1997 STOCK PLAN

                            STOCK OPTION AGREEMENT


     Unless otherwise defined herein, the terms defined in the Plan shall have
the same defined meanings in this Option Agreement.

I. NOTICE OF STOCK OPTION GRANT
   ----------------------------





     The undersigned Optionee has been granted an Option to purchase Common
Stock of the Company, subject to the terms and conditions of the Plan and this
Option Agreement, as follows:

     Date of Grant

     Vesting Commencement Date

     Exercise Price per Share

     Total Number of Shares Granted

     Total Exercise Price

     Type of Option:               X    Incentive Stock Option
                                  ---

                                  ___   Nonstatutory Stock Option


     Term/Expiration Date:        In accordance with the Plan Agreement


     Vesting Schedule:
     ----------------

     This Option shall be exercisable, in whole or in part, according to the
following vesting schedule:
<PAGE>

     Twenty five percent (25%) on the one year anniversary of the Vesting
     Commencement Date, and one forty eighth (1/48) each month thereafter.


     Termination Period:
     ------------------

     This Option shall be exercisable for three months after Optionee ceases to
be a Service Provider. Upon Optionee's death or Disability, this Option may be
exercised for one year after Optionee ceases to be a Service Provider. In no
event may Optionee exercise this Option after the Term/Expiration Date as
provided above.

II.  AGREEMENT
     ---------

     1.  Grant of Option. The Plan Administrator of the Company hereby grants
         ---------------
to the Optionee named in the Notice of Grant (the "Optionee"), an option (the
"Option") to purchase the number of Shares set forth in the Notice of Grant, at
the exercise price per Share set forth in the Notice of Grant (the "Exercise
Price"), and subject to the terms and conditions of the Plan, which is
incorporated herein by reference. Subject to Section 14(c) of the Plan, in the
event of a conflict between the terms and conditions of the Plan and this Option
Agreement, the terms and conditions of the Plan shall prevail.

         If designated in the Notice of Grant as an Incentive Stock Option
("ISO"), this Option is intended to qualify as an Incentive Stock Option as
defined in Section 422 of the Code. Nevertheless, to the extent that it exceeds
the $100,000 rule of Code Section 422(d), this Option shall be treated as a
Nonstatutory Stock Option ("NSO").

     2.  Exercise of Option.
         ------------------

         (a) Right to Exercise. This Option shall be exercisable during its
             -----------------
term in accordance with the Vesting Schedule set out in the Notice of Grant and
with the applicable provisions of the Plan and this Option Agreement.

         (b) Method of Exercise. This Option shall be exercisable by delivery
             ------------------
of an exercise notice in the form attached as Exhibit A (the "Exercise Notice")
which shall state the election to exercise the Option, the number of Shares with
respect to which the Option is being exercised, and such other representations
and agreements as may be required by the Company. The Exercise Notice shall be
accompanied by payment of the aggregate Exercise Price as to all Exercised
Shares. This Option shall be deemed to be exercised upon receipt by the Company
of such fully executed Exercise Notice accompanied by the aggregate Exercise
Price.

         No Shares shall be issued pursuant to the exercise of an Option unless
such issuance and such exercise complies with Applicable laws. Assuming such
compliance, for income tax
<PAGE>

purposes the Shares shall be considered transferred to the Optionee on the date
on which the Option is exercised with respect to such Shares.

     3.  Optionee's Representations. In the event the Shares have not been
         --------------------------
registered under the Securities Act of 1933, as amended, at the time this Option
is exercised, the Optionee shall, if required by the Company, concurrently with
the exercise of all or any portion of this Option, deliver to the Company his or
her Investment Representation Statement in the form attached hereto as Exhibit
B.

     4.  Lock-Up Period. Optionee hereby agrees that, if so requested by the
         --------------
Company or any representative of the underwriters (the "Managing Underwriter")
in connection with any registration of the offering of any securities of the
Company under the Securities Act, Optionee shall not sell or otherwise transfer
any Shares or other securities of the Company during the 180-day period (or such
other period as may be requested in writing by the Managing Underwriter and
agreed to in writing by the Company) (the "Market Standoff Period") following
the effective date of a registration statement of the Company filed under the
Securities Act. Such restriction shall apply only to the first registration
statement of the Company to become effective under the Securities Act that
includes securities to be sold on behalf of the Company to the public in an
underwritten public offering under the Securities Act. The Company may impose
stop-transfer instructions with respect to securities subject to the foregoing
restrictions until the end of such Market Standoff Period.

     5.  Method of Payment. Payment of the aggregate Exercise Price shall be by
         -----------------
any of the following, or a combination thereof, at the election of the Optionee:

         (a) cash or check;

         (b) consideration received by the Company under a formal cashless
exercise program adopted by the Company in connection with the Plan; or

         (c) surrender of other Shares which, (i) in the case of Shares acquired
upon exercise of an option, have been owned by the Optionee for more than six
(6) months on the date of surrender, and (ii) have a Fair Market Value on the
date of surrender equal to the aggregate Exercise Price of the Exercised Shares.

     6.  Restrictions on Exercise. This Option may not be exercised until such
         ------------------------
time as the Plan has been approved by the shareholders of the Company, or if the
issuance of such Shares upon such exercise or the method of payment of
consideration for such shares would constitute a violation of any Applicable
Law.

     7.  Non-Transferability of Option. This Option may not be transferred in
         -----------------------------
any manner otherwise than by will or by the laws of descent or distribution and
may be exercised during the lifetime of Optionee only by Optionee. The terms of
the Plan and this Option Agreement shall be binding upon the executors,
administrators, heirs, successors and assigns of the Optionee.
<PAGE>

     8.  Term of Option. This Option may be exercised only within the term set
         --------------
out in the Notice of Grant, and may be exercised during such term only in
accordance with the Plan and the terms of this Option.

     9.  Tax Consequences. Set forth below is a brief summary as of the date of
         ----------------
this Option of some of the federal tax consequences of exercise of this Option
and disposition of the Shares. THIS SUMMARY IS NECESSARILY INCOMPLETE, AND THE
TAX LAWS AND REGULATIONS ARE SUBJECT TO CHANGE. THE OPTIONEE SHOULD CONSULT A
TAX ADVISER BEFORE EXERCISING THIS OPTION OR DISPOSING OF THE SHARES.

         (a) Exercise of ISO. If this Option qualifies as an ISO, there will be
             ---------------
no regular federal income tax liability upon the exercise of the Option,
although the excess, if any, of the Fair Market Value of the Shares on the date
of exercise over the Exercise Price will be treated as an adjustment to the
alternative minimum tax for federal tax purposes and may subject the Optionee to
the alternative minimum tax in the year of exercise.

         (b) Exercise of Nonstatutory Stock Option. There may be a regular
             -------------------------------------
federal income tax liability upon the exercise of a Nonstatutory Stock Option.
The Optionee will be treated as having received compensation income (taxable at
ordinary income tax rates) equal to the excess, if any, of the Fair Market Value
of the Shares on the date of exercise over the Exercise Price. If Optionee is an
Employee or a former Employee, the Company will be required to withhold from
Optionee's compensation or collect from Optionee and pay to the applicable
taxing authorities an amount in cash equal to a percentage of this compensation
income at the time of exercise, and may refuse to honor the exercise and refuse
to deliver Shares if such withholding amounts are not delivered at the time of
exercise.

         (c) Disposition of Shares. In the case of an NSO, if Shares are held
             ---------------------
for at least one year, any gain realized on disposition of the Shares will be
treated as long-term capital gain for federal income tax purposes. In the case
of an ISO, if Shares transferred pursuant to the Option are held for at least
one year after exercise and of at least two years after the Date of Grant, any
gain realized on disposition of the Shares will also be treated as long-term
capital gain for federal income tax purposes. If Shares purchased under an ISO
are disposed of within one year after exercise or two years after the Date of
Grant, any gain realized on such disposition will be treated as compensation
income (taxable at ordinary income rates) to the extent of the difference
between the Exercise Price and the lesser of (1) the Fair Market Value of the
Shares on the date of exercise, or (2) the sale price of the Shares. Any
additional gain will be taxed as capital gain, short-term or long-term depending
on the period that the ISO Shares were held.

         (d) Notice of Disqualifying Disposition of ISO Shares. If the Option
             -------------------------------------------------
granted to Optionee herein is an ISO, and if Optionee sells or otherwise
disposes of any of the Shares acquired pursuant to the ISO on or before the
later of (1) the date two years after the Date of Grant, or (2) the date one
year after the date of exercise, the Optionee shall immediately notify the
Company in
<PAGE>

writing of such disposition. Optionee agrees that Optionee may be subject to
income tax withholding by the Company on the compensation income recognized by
the Optionee.

     10. Entire Agreement; Governing Law. The Plan is incorporated herein by
         -------------------------------
reference. The Plan and this Option Agreement constitute the entire agreement of
the parties with respect to the subject matter hereof and supersede in their
entirety all prior undertakings and agreements of the Company and Optionee with
respect to the subject matter hereof, and may not be modified adversely to the
Optionee's interest except by means of a writing signed by the Company and
Optionee. This agreement is governed by the internal substantive laws but not
the choice of law rules of California.

     11. No Guarantee of Continued Service. OPTIONEE ACKNOWLEDGES AND AGREES
         ---------------------------------
THAT THE VESTING OF SHARES PURSUANT TO THE VESTING SCHEDULE HEREOF IS EARNED
ONLY BY CONTINUING AS A SERVICE PROVIDER AT THE WILL OF THE COMPANY (NOT THROUGH
THE ACT OF BEING HIRED, BEING GRANTED THIS OPTION OR ACQUIRING SHARES
HEREUNDER). OPTIONEE FURTHER ACKNOWLEDGES AND AGREES THAT THIS AGREEMENT, THE
TRANSACTIONS CONTEMPLATED HEREUNDER AND THE VESTING SCHEDULE SET FORTH HEREIN DO
NOT CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF CONTINUED ENGAGEMENT AS A
SERVICE PROVIDER FOR THE VESTING PERIOD, FOR ANY PERIOD, OR AT ALL, AND SHALL
NOT INTERFERE IN ANY WAY WITH OPTIONEE'S RIGHT OR THE COMPANY'S RIGHT TO
TERMINATE OPTIONEE'S RELATIONSHIP AS A SERVICE PROVIDER AT ANY TIME, WITH OR
WITHOUT CAUSE.

     Optionee acknowledges receipt of a copy of the Plan and represents that he
or she is familiar with the terms and provisions thereof, and hereby accepts
this Option subject to all of the terms and provisions thereof. Optionee has
reviewed the Plan and this Option in their entirety, has had an opportunity to
obtain the advice of counsel prior to executing this Option and fully
understands all provisions of the Option. Optionee hereby agrees to accept as
binding, conclusive and final all decisions or interpretations of the
Administrator upon any questions arising under the Plan or this Option. Optionee
further agrees to notify the Company upon any change in the residence address
indicated below.

OPTIONEE:                           SANDPIPER NETWORKS, INC..


_____________________________       __________________________________
Signature                           By

_____________________________       ______________________________________
Print Name                          Title

_____________________________
_____________________________
Residence Address
<PAGE>

                                   EXHIBIT A
                                   ---------

                                1997 STOCK PLAN

                                EXERCISE NOTICE

SANDPIPER NETWORKS, INC.
125 Auburn Court
Suite 210
Westlake Village, California 91362

Attention: President

     1.  Exercise of Option. Effective as of today, ___________, 19__, the
         ------------------
undersigned ("Optionee") hereby elects to exercise Optionee's option to purchase
_________ shares of the Common Stock (the "Shares") of SANDPIPER NETWORKS, INC.
(the "Company") under and pursuant to the 1997 Stock Plan (the "Plan") and the
Stock Option Agreement dated ________, 19______ (the "Option Agreement").

     2.  Delivery of Payment. Purchaser herewith delivers to the Company the
         -------------------
full purchase price of the Shares, as set forth in the Option Agreement.

     3.  Representations of Optionee. Optionee acknowledges that Optionee has
         ---------------------------
received, read and understood the Plan and the Option Agreement and agrees to
abide by and be bound by their terms and conditions.

     4.  Rights as Shareholder. Until the issuance of the Shares (as evidenced
         ---------------------
by the appropriate entry on the books of the Company or of a duly authorized
transfer agent of the Company), no right to vote or receive dividends or any
other rights as a shareholder shall exist with respect to the Optioned Stock,
notwithstanding the exercise of the Option. The Shares shall be issued to the
Optionee as soon as practicable after the Option is exercised. No adjustment
shall be made for a dividend or other right for which the record date is prior
to the date of issuance except as provided in Section 12 of the Plan.

     5.  Company's Right of First Refusal. Before any Shares held by Optionee
         --------------------------------
or any transferee (either being sometimes referred to herein as the "Holder")
may be sold or otherwise transferred (including transfer by gift or operation of
law), the Company or its assignee(s) shall have a right of first refusal to
purchase the Shares on the terms and conditions set forth in this Section (the
"Right of First Refusal").

         (a) Notice of Proposed Transfer. The Holder of the Shares shall
             ---------------------------
deliver to the Company a written notice (the "Notice") stating: (i) the Holder's
bona fide intention to sell or otherwise transfer such Shares; (ii) the name of
each proposed purchaser or other transferee
<PAGE>

("Proposed Transferee"); (iii) the number of Shares to be transferred to each
Proposed Transferee; and (iv) the bona fide cash price or other consideration
for which the Holder proposes to transfer the Shares (the "Offered Price"), and
the Holder shall offer the Shares at the Offered Price to the Company or its
assignee(s).

         (b) Exercise of Right of First Refusal. At any time within thirty (30)
             ----------------------------------
days after receipt of the Notice, the Company and/or its assignee(s) may, by
giving written notice to the Holder, elect to purchase all, but not less than
all, of the Shares proposed to be transferred to any one or more of the Proposed
Transferees, at the purchase price determined in accordance with subsection (c)
below.

         (c) Purchase Price. The purchase price ("Purchase Price") for the
             --------------
Shares purchased by the Company or its assignee(s) under this Section shall be
the Offered Price. If the Offered Price includes consideration other than cash,
the cash equivalent value of the non-cash consideration shall be determined by
the Board of Directors of the Company in good faith.

         (d) Payment. Payment of the Purchase Price shall be made, at the
             -------
option of the Company or its assignee(s), in cash (by check), by cancellation of
all or a portion of any outstanding indebtedness of the Holder to the Company
(or, in the case of repurchase by an assignee, to the assignee), or by any
combination thereof within 30 days after receipt of the Notice or in the manner
and at the times set forth in the Notice.

         (e) Holder's Right to Transfer. If all of the Shares proposed in the
             --------------------------
Notice to be transferred to a given Proposed Transferee are not purchased by the
Company and/or its assignee(s) as provided in this Section, then the Holder may
sell or otherwise transfer such Shares to that Proposed Transferee at the
Offered Price or at a higher price, provided that such sale or other transfer is
consummated within 120 days after the date of the Notice, that any such sale or
other transfer is effected in accordance with any applicable securities laws and
that the Proposed Transferee agrees in writing that the provisions of this
Section shall continue to apply to the Shares in the hands of such Proposed
Transferee. If the Shares described in the Notice are not transferred to the
Proposed Transferee within such period, a new Notice shall be given to the
Company, and the Company and/or its assignees shall again be offered the Right
of First Refusal before any Shares held by the Holder may be sold or otherwise
transferred.

         (f) Exception for Certain Family Transfers. Anything to the contrary
             --------------------------------------
contained in this Section notwithstanding, the transfer of any or all of the
Shares during the Optionee's lifetime or on the Optionee's death by will or
intestacy to the Optionee's immediate family or a trust for the benefit of the
Optionee's immediate family shall be exempt from the provisions of this Section.
"Immediate Family" as used herein shall mean spouse, lineal descendant or
antecedent, father, mother, brother or sister. In such case, the transferee or
other recipient shall receive and hold the Shares so transferred subject to the
provisions of this Section, and there shall be no further transfer of such
Shares except in accordance with the terms of this Section.
<PAGE>

         (g) Termination of Right of First Refusal. The Right of First Refusal
             -------------------------------------
shall terminate as to any Shares upon the first sale of Common Stock of the
Company to the general public pursuant to a registration statement filed with
and declared effective by the Securities and Exchange Commission under the
Securities Act of 1933, as amended.

     6.  Tax Consultation. Optionee understands that Optionee may suffer
         ----------------
adverse tax consequences as a result of Optionee's purchase or disposition of
the Shares. Optionee represents that Optionee has consulted with any tax
consultants Optionee deems advisable in connection with the purchase or
disposition of the Shares and that Optionee is not relying on the Company for
any tax advice.

     7.  Restrictive Legends and Stop-Transfer Orders.
         --------------------------------------------

         (a) Legends. Optionee understands and agrees that the Company shall
             -------
cause the legends set forth below or legends substantially equivalent thereto,
to be placed upon any certificate(s) evidencing ownership of the Shares together
with any other legends that may be required by the Company or by state or
federal securities laws:

         THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER
         THE SECURITIES ACT OF 1933 (THE "ACT") AND MAY NOT BE OFFERED,
         SOLD OR OTHERWISE TRANSFERRED, PLEDGED OR HYPOTHECATED UNLESS AND
         UNTIL REGISTERED UNDER THE ACT OR, IN THE OPINION OF COMPANY
         COUNSEL SATISFACTORY TO THE ISSUER OF THESE SECURITIES, SUCH
         OFFER, SALE OR TRANSFER, PLEDGE OR HYPOTHECATION IS IN COMPLIANCE
         THEREWITH.

         THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO CERTAIN
         RESTRICTIONS ON TRANSFER AND A RIGHT OF FIRST REFUSAL HELD BY THE
         ISSUER OR ITS ASSIGNEE(S) AS SET FORTH IN THE EXERCISE NOTICE
         BETWEEN THE ISSUER AND THE ORIGINAL HOLDER OF THESE SHARES, A COPY
         OF WHICH MAY BE OBTAINED AT THE PRINCIPAL OFFICE OF THE ISSUER.
         SUCH TRANSFER RESTRICTIONS AND RIGHT OF FIRST REFUSAL ARE BINDING
         ON TRANSFEREES OF THESE SHARES.

         (b) Stop-Transfer Notices. Optionee agrees that, in order to ensure
             ---------------------
compliance with the restrictions referred to herein, the Company may issue
appropriate "stop transfer" instructions to its transfer agent, if any, and
that, if the Company transfers its own securities, it may make appropriate
notations to the same effect in its own records.
<PAGE>

         (c) Refusal to Transfer. The Company shall not be required (i) to
             -------------------
transfer on its books any Shares that have been sold or otherwise transferred in
violation of any of the provisions of this Agreement or (ii) to treat as owner
of such Shares or to accord the right to vote or pay dividends to any purchaser
or other transferee to whom such Shares shall have been so transferred.

     8.  Successors and Assigns. The Company may assign any of its rights under
         ----------------------
this Agreement to single or multiple assignees, and this Agreement shall inure
to the benefit of the successors and assigns of the Company. Subject to the
restrictions on transfer herein set forth, this Agreement shall be binding upon
Optionee and his or her heirs, executors, administrators, successors and
assigns.

     9.  Interpretation. Any dispute regarding the interpretation of this
         --------------
Agreement shall be submitted by Optionee or by the Company forthwith to the
Administrator which shall review such dispute at its next regular meeting. The
resolution of such a dispute by the Administrator shall be final and binding on
all parties.

     10. Governing Law; Severability. This Agreement is governed by the
         ---------------------------
internal substantive laws but not the choice of law rules, of California.

     11. Entire Agreement. The Plan and Option Agreement are incorporated
         ----------------
herein by reference. This Agreement, the Plan, the Option Agreement and the
Investment Representation Statement constitute the entire agreement of the
parties with respect to the subject matter hereof and supersede in their
entirety all prior undertakings and agreements of the Company and Optionee with
respect to the subject matter hereof, and may not be modified adversely to the
Optionee's interest except by means of a writing signed by the Company and
Optionee.

Submitted by:                       Accepted by:

OPTIONEE:                           SANDPIPER NETWORKS, INC.

____________________________        ___________________________________
Signature                           By

____________________________        ___________________________________
Print Name                          Its

Address:                            Address:
- -------                             -------

____________________________        ___________________________________
____________________________        ___________________________________

                                    ___________________________________
                                    Date Received
<PAGE>

                                   EXHIBIT B
                                   ---------

                      INVESTMENT REPRESENTATION STATEMENT

OPTIONEE:

COMPANY:      SANDPIPER NETWORKS, INC.

SECURITY:     COMMON STOCK

AMOUNT:

DATE:


In connection with the purchase of the above-listed Securities, the undersigned
Optionee represents to the Company the following:

         (a) Optionee is aware of the Company's business affairs and financial
condition and has acquired sufficient information about the Company to reach an
informed and knowledgeable decision to acquire the Securities. Optionee is
acquiring these Securities for investment for Optionee's own account only and
not with a view to, or for resale in connection with, any "distribution" thereof
within the meaning of the Securities Act of 1933, as amended (the "Securities
Act").

         (b) Optionee acknowledges and understands that the Securities
constitute "restricted securities" under the Securities Act and have not been
registered under the Securities Act in reliance upon a specific exemption
therefrom, which exemption depends upon, among other things, the bona fide
nature of Optionee's investment intent as expressed herein. In this connection,
Optionee understands that, in the view of the Securities and Exchange
Commission, the statutory basis for such exemption may be unavailable if
Optionee's representation was predicated solely upon a present intention to hold
these Securities for the minimum capital gains period specified under tax
statutes, for a deferred sale, for or until an increase or decrease in the
market price of the Securities, or for a period of one year or any other fixed
period in the future. Optionee further understands that the Securities must be
held indefinitely unless they are subsequently registered under the Securities
Act or an exemption from such registration is available. Optionee further
acknowledges and understands that the Company is under no obligation to register
the Securities. Optionee understands that the certificate evidencing the
Securities will be imprinted with a legend which prohibits the transfer of the
Securities unless they are registered or such registration is not required in
the opinion of counsel satisfactory to the Company, a legend prohibiting their
transfer without the consent of the Commissioner of Corporations of the State of
California and any other legend required under applicable state securities laws.
<PAGE>

         (c) Optionee is familiar with the provisions of Rule 701 and Rule 144,
each promulgated under the Securities Act, which, in substance, permit limited
public resale of "restricted securities" acquired, directly or indirectly from
the issuer thereof, in a non-public offering subject to the satisfaction of
certain conditions. Rule 701 provides that if the issuer qualifies under Rule
701 at the time of the grant of the Option to the Optionee, the exercise will be
exempt from registration under the Securities Act. In the event the Company
becomes subject to the reporting requirements of Section 13 or 15(d) of the
Securities Exchange Act of 1934, ninety (90) days thereafter (or such longer
period as any market stand-off agreement may require) the Securities exempt
under Rule 701 may be resold, subject to the satisfaction of certain of the
conditions specified by Rule 144, including: (1) the resale being made through a
broker in an unsolicited "broker's transaction" or in transactions directly with
a market maker (as said term is defined under the Securities Exchange Act of
1934); and, in the case of an affiliate, (2) the availability of certain public
information about the Company, (3) the amount of Securities being sold during
any three month period not exceeding the limitations specified in Rule 144(e),
and (4) the timely filing of a Form 144, if applicable.

     In the event that the Company does not qualify under Rule 701 at the time
of grant of the Option, then the Securities may be resold in certain limited
circumstances subject to the provisions of Rule 144, which requires the resale
to occur not less than one year after the later of the date the Securities were
sold by the Company or the date the Securities were sold by an affiliate of the
Company, within the meaning of Rule 144; and, in the case of acquisition of the
Securities by an affiliate, or by a non-affiliate who subsequently holds the
Securities less than two years, the satisfaction of the conditions set forth in
sections (1), (2), (3) and (4) of the paragraph immediately above.

         (d) Optionee further understands that in the event all of the
applicable requirements of Rule 701 or 144 are not satisfied, registration under
the Securities Act, compliance with Regulation A, or some other registration
exemption will be required; and that, notwithstanding the fact that Rules 144
and 701 are not exclusive, the Staff of the Securities and Exchange Commission
has expressed its opinion that persons proposing to sell private placement
securities other than in a registered offering and otherwise than pursuant to
Rules 144 or 701 will have a substantial burden of proof in establishing that an
exemption from registration is available for such offers or sales, and that such
persons and their respective brokers who participate in such transactions do so
at their own risk. Optionee understands that no assurances can be given that any
such other registration exemption will be available in such event.


                              Signature of Optionee:

                              _____________________________________

                              Date:__________________________, 19__

<PAGE>

                                                                    EXHIBIT 99.3

                   FORM OF STOCK OPTION ASSUMPTION AGREEMENT
<PAGE>

                             DIGITAL ISLAND, INC.

                       STOCK OPTION ASSUMPTION AGREEMENT
                           SANDPIPER NETWORKS, INC.
                                1997 STOCK PLAN

Optionee: ((First_Name)) ((Last_Name)),

          STOCK OPTION ASSUMPTION AGREEMENT effective as of the 28th day of
December, 1999.

          WHEREAS, the undersigned individual ("Optionee") holds one or more
outstanding options to purchase shares of the common stock of Sandpiper
Networks, Inc., a California corporation ("Sandpiper"), which were granted to
Optionee under the Sandpiper 1997 Stock Plan (the "Plan").

          WHEREAS, each of those options is evidenced by a Stock Option
Agreement (the "Option Agreement") issued to Optionee under the Plan.

          WHEREAS, Sandpiper has been acquired by Digital Island, Inc., a
Delaware corporation ("Digital Island") through the merger of Sandpiper with and
into Digital Island (the "Merger") pursuant to the Agreement and Plan of
Reorganization, by and between Digital Island and Sandpiper (the "Merger
Agreement").

          WHEREAS, the provisions of the Merger Agreement require the
obligations of Sandpiper under each outstanding option under the Plan to be
assumed by Digital Island at the consummation of the Merger and the holder of
each outstanding option to be issued an agreement evidencing the assumption of
such option.

          WHEREAS, pursuant to the provisions of the Merger Agreement, the
exchange ratio (the "Exchange Ratio") in effect for the Merger is 1.0727 shares
of Digital Island common stock ("Digital Island Stock") for each outstanding
share of Sandpiper common stock ("Sandpiper Stock").

          WHEREAS, the purpose of this Agreement is to evidence the assumption
by Digital Island of the outstanding options held by Optionee at the time of the
consummation of the Merger (the "Effective Time") and to reflect certain
adjustments to those options which have become necessary in connection with
their assumption by Digital Island in the Merger.

          NOW, THEREFORE, it is hereby agreed as follows:

          1.   The number of shares of Sandpiper Stock subject to the options
held by Optionee immediately prior to the Effective Time (the "Sandpiper
Options") and the exercise price payable per share are set forth below.  Digital
Island hereby assumes, as of the Effective Time, all the duties and obligations
of Sandpiper under each of the Sandpiper Options.  In connection with such
assumption, the number of shares of Digital Island Stock purchasable under
<PAGE>

each Sandpiper Option hereby assumed and the exercise price payable thereunder
have been adjusted to reflect the Exchange Ratio. Accordingly, the number of
shares of Digital Island Stock subject to each Sandpiper Option hereby assumed
shall be as specified for that option below, and the adjusted exercise price
payable per share of Digital Island Stock under the assumed Sandpiper Option
shall also be as indicated for that option below.

- --------------------------------------------------------------------------------
     SANDPIPER STOCK OPTIONS                 DIGITAL ISLAND ASSUMED OPTIONS
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
  # of Shares of                         # of Shares
    Sandpiper        Exercise Price    of Digital Island   Adjusted Exercise
   Common Stock        per Share         Common Stock       Price per Share
- --------------------------------------------------------------------------------
 Sandpiper Shares   $Sandpiper Price    Digital Island     $Digital Island Price
                                            Shares
- --------------------------------------------------------------------------------

          2.   The intent of the foregoing adjustments to each assumed Sandpiper
Option is to assure that the spread between the aggregate fair market value of
the shares of Digital Island Stock purchasable under each such option and the
aggregate exercise price as adjusted pursuant to this Agreement will,
immediately after the consummation of the Merger, be not less than the spread
which existed, immediately prior to the Merger, between the then aggregate fair
market value of the Sandpiper Stock subject to the Sandpiper Option and the
aggregate exercise price in effect at such time under the Option Agreement. Such
adjustments are also intended to preserve, immediately after the Merger, on a
per share basis, the same ratio of exercise price per option share to fair
market value per share which existed under the Sandpiper Option immediately
prior to the Merger.

          3.  The following provisions shall govern each Sandpiper Option hereby
assumed by Digital Island:

                    (a)  Unless the context otherwise requires, all references
          in each Option Agreement and, if applicable, in the Plan (to the
          extent incorporated into such Option Agreement) (i) to the "Company"
          shall mean Digital Island, (ii) to "Share" shall mean share of Digital
          Island Stock, (iii) to the "Board" shall mean the Board of Directors
          of Digital Island and (iv) to the "Committee" shall mean the
          Compensation Committee of the Digital Island Board of Directors.

                    (b)  Except as modified by this Agreement, the grant date
          and the expiration date of each assumed Sandpiper Option and all other
          provisions which govern either the exercise or the termination of the
          assumed Sandpiper Option shall remain the same as set forth in the
          Option Agreement applicable to that option, and the provisions of the
          Plan and the Option Agreement shall accordingly govern and control
          Optionee's rights under this Agreement to purchase Digital Island
          Stock under the assumed Sandpiper Option.

                    (c)  Pursuant to the terms of the Option Agreement, none of
          the assumed Sandpiper Options shall vest or become exercisable on an
          accelerated basis upon the consummation of the Merger. Accordingly,
          each Sandpiper Option assumed by Digital Island shall continue to vest
          and become exercisable for any

                                       2
<PAGE>

          unvested shares of Digital Island Stock subject to that option in
          accordance with the same installment vesting schedule in effect under
          the applicable Option Agreement immediately prior to the Effective
          Time; provided, however, that the number of shares subject to each
                --------
          such installment shall be adjusted to reflect the Exchange Ratio.

                    (d)  For purposes of applying any and all provisions of the
          Option Agreement and/or the Plan relating to Optionee's status as an
          employee or a consultant of Sandpiper, Optionee shall be deemed to
          continue in such status as an employee or a consultant for so long as
          Optionee renders services as an employee or a consultant to Digital
          Island or any present or future majority-owned Digital Island
          subsidiary. Accordingly, the provisions of the Option Agreement
          governing the termination of the assumed Sandpiper Options upon
          Optionee's cessation of service as an employee or a consultant of
          Sandpiper shall hereafter be applied on the basis of Optionee's
          cessation of employee or consultant status with Digital Island and its
          subsidiaries, and each assumed Sandpiper Option shall accordingly
          terminate, within the designated time period in effect under the
          Option Agreement for that option, following such cessation of employee
          or consultant status.

                    (e)  The adjusted exercise price payable for the Digital
          Island Stock subject to each assumed Sandpiper Option shall be payable
          in any of the forms authorized under the Option Agreement applicable
          to that option. For purposes of determining the holding period of any
          shares of Digital Island Stock delivered in payment of such adjusted
          exercise price, the period for which such shares were held as
          Sandpiper Stock prior to the Merger shall be taken into account.

                    (f)  In order to exercise each assumed Sandpiper Option,
          Optionee must deliver to Digital Island a written notice of exercise
          in which the number of shares of Digital Island Stock to be purchased
          thereunder must be indicated. The exercise notice must be accompanied
          by payment of the adjusted exercise price payable for the purchased
          shares of Digital Island Stock and should be delivered to Digital
          Island at the following address:

                    Digital Island, Inc.
                    45 Fremont Street, Suite 1200
                    San Francisco, CA  94105
                    Attention:  Pamela Bold

          4.   Except to the extent specifically modified by this Option
Assumption Agreement, all of the terms and conditions of each Option Agreement
as in effect immediately prior to the Merger shall continue in full force and
effect and shall not in any way be amended, revised or otherwise affected by
this Stock Option Assumption Agreement.

                                       3
<PAGE>

          IN WITNESS WHEREOF, Digital Island, Inc. has caused this Stock Option
Assumption Agreement to be executed on its behalf by its duly-authorized officer
as of the 28th day of December, 1999.


                                   DIGITAL ISLAND, INC.

                                   By: ______________________________________
                                       Ruann Ernst, Chief Executive Officer



                                ACKNOWLEDGMENT


          The undersigned acknowledges receipt of the foregoing Stock Option
Assumption Agreement and understands that all rights and liabilities with
respect to each of his or her Sandpiper Options hereby assumed by Digital Island
are as set forth in the Option Agreement, the Plan, as applicable, and such
Stock Option Assumption Agreement.

                                   _________________________________________
                                   ((First_Name)) ((Last_Name)), OPTIONEE



DATED:  __________________, 2000

                                       4


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