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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. __)*
Altigen Communications, Inc.
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(Name of Issuer)
Common Stock, $0.001 par value
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(Title of Class of Securities)
021489109
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(CUSIP Number)
August 27, 2006
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(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).
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1 Names of Reporting Persons
I.R.S. Identification Nos. of Above Persons (entities only) Wanger
Investment Management, LLC
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2 Check the Appropriate Box if a Member of a Group (See Instructions)
(a) |_|
(b) |_|
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3 SEC Use Only
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4 Citizenship or Place of Organization
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5 Sole Voting Power
407,227
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Number of Shares 6 Shared Voting Power
Beneficially Owned 0
by Each Reporting --------------------------------------------------------
Person With 7 Sole Dispositive Power
407,227
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8 Shared Dispositive Power
369,177
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9 Aggregate Amount Beneficially Owned by Each Reporting Person
776,404
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10 Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
Instructions)
|_|
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11 Percent of Class Represented by Amount in Row (9)
5.15%
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12 Type of Reporting Person (See Instructions)
OO
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Item 1(a) Name of Issuer:
Altigen Communications, Inc.
Item 1(b) Address of Issuer's Principal Executive Offices:
4555 Cushing Parkway, Fremont, California 94538
Item 2(a) Name of Person Filing:
Wanger Investment Management, LLC
Item 2(b) Address of Principal Business Office or, if none, Residence:
1660 N. Burling Street, Chicago, Illinois 60614
Item 2(c) Citizenship:
Delaware
Item 2(d) Title of Class of Securities:
Common Stock, $0.001 par value ("Common Stock")
Item 2(e) CUSIP Number:
021489109
Item 3. If this statement is filed pursuant to ss.ss.240.13d-1(b) or
240.13d-2(b) or (c), check whether the person filing is a:
(a) |_| Broker or dealer registered under section 15 of the Act
(15 U.S.C. 78o);
(b) |_| Bank as defined in section 3(a)(6) of the Act (15 U.S.C.
78c);
(c) |_| Insurance company as defined in section 3(a)(19) of the
Act (15 U.S.C. 78c);
(d) |_| Investment company registered under section 8 of the
Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e) |_| An investment adviser in accordance with
ss.240.13d-1(b)(1)(ii)(E);
(f) |_| An employee benefit plan or endowment fund in accordance
with ss.240.13d-1(b)(1)(ii)(F);
(g) |_| A parent holding company or control person in accordance
with ss.240.13d-1(b)(1)(ii)(G);
(h) |_| A savings associations as defined in Section 3(b) of the
Federal Deposit Insurance Act (12 U.S.C. 1813);
(i) |_| A church plan that is excluded from the definition of an
investment company under Section 3(c)(14) of the
Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j) |_| Group, in accordance with ss.240.13d-1(b)(1)(ii)(J).
Item 4. Ownership
(a) Amount beneficially owned:
776,404
(b) Percent of class:
5.15%, based on 15,071,311 shares of Common Stock outstanding
as of August 11, 2006 as reported by the Issuer on its Report
on Form 10-Q for the quarter ended June 30, 2006, as filed
with the Securities and Exchange Commission on August 14,
2006.
(c) Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote
407,227
(ii) Shared power to vote or to direct the vote
0
(iii) Sole power to dispose or direct the disposition of
407,227
(iv) Shared power to dispose or to direct the disposition of
369,177
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 or
Control Person
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
By signing below I certify that, to the best of my knowledge and belief,
the securities referred to above were not acquired and are not held for the
purpose of or with the effect of changing or influencing the control of the
issuer of the securities and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose or effect.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.
Date: September 8, 2006
Wanger Investments Management, LLC
By: /s/ Eric Wanger
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Name: Eric Wanger
Title: Managing Member