<PAGE>
----------------------------
OMB Number: 3235-0145
----------------------------
Expires: August 31, 1999
Estimated average burden
Hours per response...14.90
----------------------------
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
ALTIGEN COMMUNICATIONS, INC.
- ------------------------------------------------------------------------------
(Name of Issuer)
COMMON STOCK
- ------------------------------------------------------------------------------
(Title of Class of Securities)
021489 10 9
- ------------------------------------------------------------------------------
(CUSIP Number)
DECEMBER 31, 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)
[_] Rule 13d-1(c)
[X] 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).
SEC 1745 (3-98)
<PAGE>
CUSIP No. 021489 10 9
- -------------------------------------------------------------------------------
1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
Kenneth Tai
- -------------------------------------------------------------------------------
2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a)[_]
(b)[X]
- -------------------------------------------------------------------------------
3. SEC Use Only
- -------------------------------------------------------------------------------
4. Citizenship or Place of Organization Taiwan
- -------------------------------------------------------------------------------
Number of Shares 5. Sole Voting Power 4,745
Beneficially ------------------------------------------------------------
Owned by Each 6. Shared Voting Power 898,389
Reporting ------------------------------------------------------------
Person With: 7. Sole Dispositive Power 4,745
------------------------------------------------------------
8. Shared Dispositive Power 898,389
- -------------------------------------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person
903,134
10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
Instructions) Mr. Tai disclaims beneficial ownership of all of the
shares (898,389 shares) held by the following entities, except to the
extent of his partnership or corporate interest in each of them:
InveStar Burgeon Venture Capital, Inc. (598,927 shares); InveStar
Dayspring Venture Group, Inc. (99,821 shares); InveStar Excelsus
Venture Capital (Int'l) Inc., LDC (99,821 shares); and Forefront
Venture Partners, L.P. (99,820 shares).
11. Percent of Class Represented by Amount in Row (9) 6.7%
- -------------------------------------------------------------------------------
12. Type of Reporting Person (See Instructions) IN
- -------------------------------------------------------------------------------
<PAGE>
CUSIP No. 021489 10 9
- -------------------------------------------------------------------------------
1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
Herbert Chang
- -------------------------------------------------------------------------------
2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a)[_]
(b)[X]
- ------------------------------------------------------------------------------
3. SEC Use Only
- ------------------------------------------------------------------------------
4. Citizenship or Place of Organization Taiwan
- ------------------------------------------------------------------------------
Number of Shares 5. Sole Voting Power -0-
Beneficially ----------------------------------------------------------
Owned by Each 6. Shared Voting Power 898,389
Reporting ----------------------------------------------------------
Person With: 7. Sole Dispositive Power -0-
----------------------------------------------------------
8. Shared Dispositive Power 898,389
- ------------------------------------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person
898,389
10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
Instructions) Mr. Chang disclaims beneficial ownership of all of the
shares (898,389 shares) held by the following entities, except to the
extent of his partnership or corporate interest in each of them:
InveStar Burgeon Venture Capital, Inc. (598,927 shares); InveStar
Dayspring Venture Group, Inc. (99,821 shares); InveStar Excelsus
Venture Capital (Int'l) Inc., LDC (99,821 shares); and Forefront
Venture Partners, L.P. (99,820 shares).
11. Percent of Class Represented by Amount in Row (9) 6.7%
- ------------------------------------------------------------------------------
12. Type of Reporting Person (See Instructions) IN
<PAGE>
Item 1.
(a) Name of Issuer ALTIGEN COMMUNICATIONS, INC.
(b) Address of Issuer's Principal Executive Offices
47427 Fremont Blvd., Fremont, CA 94538
Item 2.
(a) Name of Person Filing The persons listed in Exhibit A.
(b) Address of Principal Business Office or, if none, Residence
1737 North First Street, Suite 650, San Jose, CA 95112
(c) Citizenship Taiwan
(d) Title of Class of Securities Common Stock
(e) CUSIP Number 021489 10 9
Item 3.
Not applicable
Item 4. Ownership
Provide the following information regarding the aggregate number and
percentage of the class of securities of the issuer identified in Item 1.
(a) Amount beneficially owned: **
(b) Percent of class: **
(c) Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote. **
(ii) Shared power to vote or to direct the vote. **
(iii) Sole power to dispose or to direct the disposition of . **
(iv) Shared power to dispose or to direct the disposition of. **
** Lines 5-11 of pages 2-3 of this Schedule are incorporated herein by
reference and show, respectively, the ownership of each reporting person.
InveStar Burgeon Venture Capital, Inc. ("InveStar Burgeon") owns 598,927 shares
of AltiGen Communications, Inc. ("AltiGen"). InveStar Dayspring Venture Group,
Inc. ("InveStar Dayspring") owns 99,821 shares of AltiGen. InveStar Excelsus
Venture Capital (Int'l) Inc., LDC ("InveStar Excelsus") owns 99,821 shares of
AltiGen. InveStar Burgeon, InveStar Dayspring and InveStar Excelsus are managed
by InveStar Capital, Inc. Kenneth Tai and Herbert Chang are the Chairman and
President, respectively, of InveStar Capital, Inc. and, as a result, may be
deemed to share the power to vote and dispose of the shares held by the InveStar
entities. Forefront Venture Partners, L.P. ("Forefront Venture") owns 99,820
shares of AltiGen. Forefront Venture is managed by Forefront Associates.
Messrs. Tai and Chang are managing directors of Forefront Associates and, as a
result, may be deemed to share the power to vote and dispose of the shares held
by Forefront Venture. Each reporting person disclaims beneficial ownership
owned by the various funds, except to the extent of his partnership or corporate
interest in each of them.
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>
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set in this statement is true, complete and
correct.
February 10, 2000
--------------------
Date
/s/ Kenneth Tai
---------------
Kenneth Tai
/s/ Herbert Chang
-----------------
Herbert Chang
<PAGE>
EXHIBIT A
---------
AGREEMENT FOR JOINT FILING OF SCHEDULE 13G
THE UNDERSIGNED PERSONS agree to file with the Securities and Exchange
Commission a joint Schedule 13G on behalf of each of the undersigned with
respect to their ownership of shares of Common Stock of AltiGen Communications,
Inc.
/s/ Kenneth Tai
- ---------------
Kenneth Tai
/s/ Herbert Chang
- -----------------
Herbert Chang
