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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. )*
Media Metrix, Inc.
(Name of Issuer)
Common Stock, $.01 par value per share
(Title of Class of Securities)
58440X 10
(CUSIP Number)
May 7, 1999
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:
/ / Rule 13d-1(b)
/X/ Rule 13d-1(c)
/ / Rule 13d-1(d)
*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).
POTENTIAL PERSONS WHO ARE TO RESPOND TO THE COLLECTION OF INFORMATION CONTAINED
IN THIS FORM ARE NOT REQUIRED TO RESPOND UNLESS THE FORM DISPLAYS A CURRENTLY
VALID OMB CONTROL NUMBER.
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CUSIP No. 5844OX 10
...............................................................................
1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
Greylock IX Limited Partnership
...............................................................................
- -------------------------------------------------------------------------------
2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a).......................................................................
(b).......................................................................
- -------------------------------------------------------------------------------
3. SEC Use Only..............................................................
- -------------------------------------------------------------------------------
4. Citizenship or Place of Organization..............................Delaware
- -------------------------------------------------------------------------------
Number of Shares 5. Sole Voting Power..................-1,242,529-
Beneficially Owned by ---------------------------------------------------
Each Reporting Person
With: 6. Shared Voting Power........................-0-
---------------------------------------------------
7. Sole Dispositive Power.............-1,242,529-
---------------------------------------------------
8. Shared Dispositive Power...................-0-
- ----------------------- --- ---------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person...-1,242,529-
- -------------------------------------------------------------------------------
10. Check if the Aggregate Amount in Row (9) Excludes
Certain Shares (See Instructions).........................................
- -------------------------------------------------------------------------------
11. Percent of Class Represented by Amount in Row (9).....................6.4%
- -------------------------------------------------------------------------------
12. Type of Reporting Person (See Instructions).............................PN
- -------------------------------------------------------------------------------
Page 2 of 8 pages
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CUSIP No. 5844OX 10
...............................................................................
1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
Greylock IX GP Limited Partnership
...............................................................................
- -------------------------------------------------------------------------------
2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a).......................................................................
(b).......................................................................
- -------------------------------------------------------------------------------
3. SEC Use Only..............................................................
- -------------------------------------------------------------------------------
4. Citizenship or Place of Organization..............................Delaware
- -------------------------------------------------------------------------------
Number of Shares 5. Sole Voting Power..................-1,242,529-
Beneficially Owned by ---------------------------------------------------
Each Reporting Person
With: 6. Shared Voting Power..........................0
---------------------------------------------------
7. Sole Dispositive Power.............-1,242,529-
---------------------------------------------------
8. Shared Dispositive Power...................-0-
- -------------------------------------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person...-1,242,529-
- -------------------------------------------------------------------------------
10. Check if the Aggregate Amount in Row (9) Excludes
Certain Shares (See Instructions).........................................
- -------------------------------------------------------------------------------
11. Percent of Class Represented by Amount in Row (9).....................6.4%
- -------------------------------------------------------------------------------
12. Type of Reporting Person (See Instructions).............................PN
- -------------------------------------------------------------------------------
Page 3 of 8 pages
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CUSIP No. 5844OX 10
...............................................................................
1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
William W. Helman
...............................................................................
- -------------------------------------------------------------------------------
2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a).......................................................................
(b).......................................................................
- -------------------------------------------------------------------------------
3. SEC Use Only..............................................................
- -------------------------------------------------------------------------------
4. Citizenship or Place of Organization.........................United States
- -------------------------------------------------------------------------------
Number of Shares 5. Sole Voting Power..........................-0-
Beneficially Owned by ---------------------------------------------------
Each Reporting Person
With: 6. Shared Voting Power................-1,242,529-
---------------------------------------------------
7. Sole Dispositive Power.....................-0-
---------------------------------------------------
8. Shared Dispositive Power...........-1,242,529-
- ----------------------- --- ---------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person...-1,242,529-
- -------------------------------------------------------------------------------
10. Check if the Aggregate Amount in Row (9) Excludes
Certain Shares (See Instructions).........................................
- -------------------------------------------------------------------------------
11. Percent of Class Represented by Amount in Row (9).....................6.4%
- -------------------------------------------------------------------------------
12. Type of Reporting Person (See Instructions).............................IN
- -------------------------------------------------------------------------------
Page 4 of 8 pages
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CUSIP No. 5844OX 10
...............................................................................
1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
William S. Kaiser
...............................................................................
- -------------------------------------------------------------------------------
2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a).......................................................................
(b).......................................................................
- -------------------------------------------------------------------------------
3. SEC Use Only..............................................................
- -------------------------------------------------------------------------------
4. Citizenship or Place of Organization.........................United States
- -------------------------------------------------------------------------------
Number of Shares 5. Sole Voting Power..........................-0-
Beneficially Owned by ---------------------------------------------------
Each Reporting Person
With: 6. Shared Voting Power................-1,242,529-
---------------------------------------------------
7. Sole Dispositive Power.....................-0-
---------------------------------------------------
8. Shared Dispositive Power...........-1,242,529-
- -------------------------------------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person...-1,242,529-
- -------------------------------------------------------------------------------
10. Check if the Aggregate Amount in Row (9) Excludes
Certain Shares (See Instructions).........................................
- -------------------------------------------------------------------------------
11. Percent of Class Represented by Amount in Row (9).....................6.4%
- -------------------------------------------------------------------------------
12. Type of Reporting Person (See Instructions).............................IN
- -------------------------------------------------------------------------------
Page 5 of 8 pages
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CUSIP No. 5844OX 10
Item 1(a) Name of Issuer:
Media Metrix, Inc.
Item 1(b) Address of Issuer's Principal Executive Offices:
33 East 21st Street
New York, NY 10010
Item 2(a) Name of Person Filing:
Greylock IX Limited Partnership ("GIXLP"); Greylock
IX GP Limited Partnership ("GIXGPLP"), the General
Partner of GELP; William W. Helman and William S.
Kaiser, each a Co-Managing General Partner of GIXGPLP
(each a "Co-Managing Partner").
Item 2(b) Address of Principal Business Office or, if none,
Residence:
The address of the reporting persons is:
One Federal Street
Boston, Massachusetts 02110
Item 2(c) Citizenship:
GIXLP is a limited partnership organized under the
laws of the State of Delaware. GIXGPLP is a limited
partnership organized under the laws of the State of
Delaware. Mr. Helman is a citizen of the United
States. Mr. Kaiser is a citizen of the United States.
Item 2(d) Title of Class of Securities:
Common Stock, par value $.01 per share (the "Common
Stock").
Item 2(e) CUSIP Number:
5844OX 10
Item 3 Description of Person Filing:
Not applicable.
Item 4 Ownership(1):
(a) Amount Beneficially Owned:
GIXLP is the record holder of 1,242,529
shares of Common Stock and may be deemed to
beneficially own the 1,242,529 shares of
Common Stock held of record by GIXLP.
GIXGPLP, as General Partner of GELP, may be
deemed to beneficially own the 1,242,529
shares of Common Stock held of record by
GIXLP. Mr. Helman, as Co-Managing General
Partner of GIXGPLP, may be deemed to
beneficially own the 1,242,529 shares of
Common Stock held of record by GIXLP. Mr.
Kaiser, as Co-Managing Partner of GIXGPLP
may be
- --------
(1) As of May 7, 1999.
Page 6 of 8 pages
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deemed to beneficially own the 1,242,529 shares of
Common Stock held of record by GIXLP. The filing of
this statement shall not be construed as an admission
that any of the reporting persons are, for the
purpose of Section 13(d) or 13(g) of the Act, the
beneficial owners of any securities covered under
this statement.
(b) Percent of Class:
GIXLP: 6.4%
GIXGPLP: 6.4%
Mr. Helman: 6.4%
Mr. Kaiser: 6.4%
(c) Number of Shares as to which the person has:
(i) sole voting power; (ii) shared voting
power; (iii) sole dispositive power; (iv)
shared dispositive power:
GIXLP may be deemed to have sole power to
vote and dispose of 1,242,529 shares of
Common Stock. GIXGPLP, as General Partner of
GIXLP, may be deemed to have sole power to
vote and dispose of 1,242,529 shares of
Common Stock. Mr. Helman and Mr. Kaiser, as
Co-Managing General Partners of GIXGPLP, may
be deemed to have sole power to vote
1,242,529 shares of Common Stock.
Item 5 Ownership of Five Percent or Less of a Class:
Not applicable.
Item 6 Ownership of More than Five Percent on Behalf of
Another Person:
Not applicable.
Item 7 Identification and Classification of the Subsidiary
Which Acquired the Security Being Reported on By the
Parent Holding Company:
Not applicable.
Item 8 Identification and Classification of Members of the
Group:
Not applicable.
Item 9 Notice of Dissolution of Group:
Not applicable.
Item 10 Certification:
Not applicable.
Page 7 of 8 pages
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CUSIP No. 5844OX 10
SIGNATURE
After reasonable inquiry and to the best of the knowledge and belief of
each of the undersigned, each of the undersigned hereby certifies that the
information set forth in this statement is true, complete and correct.
DATED: February 11, 2000
GREYLOCK IX LIMITED PARTNERSHIP
By: Greylock IX GP Limited Partnership
General Partner
By: /s/ William W. Helman
-----------------------------------
William W. Helman
Co-Managing General Partner
GREYLOCK EQUITY GP LIMITED PARTNERSHIP
By: /s/ William W. Helman
---------------------------------------
William W. Helman
Co-Managing General Partner
/s/ William W. Helman
--------------------------------------------
William W. Helman
/s/ William s. Kaiser
--------------------------------------------
William S. Kaiser
Page 8 of 8 pages
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CUSIP No. 5844OX 10
Exhibit I
AGREEMENT
Pursuant to Rule 13d-1(f)(1) under the Securities Exchange Act of 1934,
as amended, the undersigned hereby agree that only one statement containing the
information required by Schedule 13G need be filed with respect to the ownership
by each of the undersigned of the shares of Common Stock of Media Metrix, Inc.
EXECUTED as a sealed instrument this 11th day of February, 2000.
GREYLOCK IX LIMITED PARTNERSHIP
By: Greylock IX GP Limited Partnership
General Partner
By: /s/ William W. Helman
-----------------------------------
William W. Helman
Co-Managing General Partner
GREYLOCK EQUITY GP LIMITED PARTNERSHIP
By: /s/ William W. Helman
---------------------------------------
William W. Helman
Co-Managing General Partner
/w/ William W. Helman
--------------------------------------------
William W. Helman
/s/ William S. Kaiser
--------------------------------------------
William S. Kaiser
