-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, UdB+e1w5FkH2KPnHORkqN5KEb5VawyoIc3QMBUr5XuTqG+03YcAKag1yd7HwOk9m UdV7RuuPVvh7H09hTMib0g== 0000912057-02-001062.txt : 20020413 0000912057-02-001062.hdr.sgml : 20020413 ACCESSION NUMBER: 0000912057-02-001062 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20020111 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: ACT TELECONFERENCING INC CENTRAL INDEX KEY: 0000918709 STANDARD INDUSTRIAL CLASSIFICATION: COMMUNICATION SERVICES, NEC [4899] IRS NUMBER: 841132665 STATE OF INCORPORATION: CO FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G SEC ACT: 1934 Act SEC FILE NUMBER: 005-54823 FILM NUMBER: 2507500 BUSINESS ADDRESS: STREET 1: 1658 COLE BLVD STREET 2: STE 130 CITY: GOLDEN STATE: CO ZIP: 80401 BUSINESS PHONE: 3032359000 MAIL ADDRESS: STREET 1: 1658 COLE BLVD STREET 2: STE 130 CITY: GOLDEN STATE: CO ZIP: 80401 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: PICTURETEL CORP CENTRAL INDEX KEY: 0000755095 STANDARD INDUSTRIAL CLASSIFICATION: TELEPHONE & TELEGRAPH APPARATUS [3661] IRS NUMBER: 042835972 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: 100 MINUTEMAN RD CITY: ANDOVER STATE: MA ZIP: 01810 BUSINESS PHONE: 9782925000 MAIL ADDRESS: STREET 1: 222 ROSEWOOD DR CITY: DANVERS STATE: MA ZIP: 01923 FORMER COMPANY: FORMER CONFORMED NAME: PICTEL CORP DATE OF NAME CHANGE: 19870505 SC 13G 1 a2067677zsc13g.htm SC 13G Prepared by MERRILL CORPORATION
QuickLinks -- Click here to rapidly navigate through this document

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No.     )*


ACT Teleconferencing, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

000955104

(CUSIP Number)

October 9, 2001

(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).


CUSIP No.      000955104    


1.   Names of Reporting Persons I.R.S. Identification Nos. of above persons (entities only).
PictureTel Corporation (I.R.S. Identification No. 04-2835972)

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 Beneficially Owned by Each Reporting Person With   5.   Sole Voting Power    638,231 (1)
       
        6.   Shared Voting Power    0
       
        7.   Sole Dispositive Power    561,308 (2)
       
        8.   Shared Dispositive Power    0

9.   Aggregate Amount Beneficially Owned by Each Reporting Person    638,231

10.   Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)  

11.   Percent of Class Represented by Amount in Row (9)    7.4%

12.   Type of Reporting Person (See Instructions)
    CO        


(1)
As of January 11, 2002, 638,231 shares are beneficially owned by PictureTel Corporation. As of October 9, 2001, 769,231 shares were beneficially owned by PictureTel Corporation.

(2)
76,923 shares are held in escrow pursuant to an Escrow Agreement dated October 9, 2001, by and among PictureTel Corporation, ACT Teleconferencing, Inc., ACT Videoconferencing, Inc. and State Street Bank and Trust Company.

Page 2 of 4



Item 1.

    (a)
    Name of Issuer: ACT Teleconferencing, Inc.

    (b)
    Address of Issuer's Principal Executive Offices: 1658 Cole Blvd., Suite 130, Golden, CO 80401


Item 2.

    (a)
    Name of Person Filing: PictureTel Corporation

    (b)
    Address of Principal Business Office: 100 Minutemen Road, Andover, MA 01810

    (c)
    Citizenship: PictureTel Corporation is a Delaware corporation.

    (d)
    Title and Class of Securities: Common Stock

    (e)
    CUSIP Number: 000955104


Item 3.

    Not applicable.


Item 4. Ownership

    (a)
    Amount Beneficially Owned: See Row 9 on Page 2.

    (b)
    Percent of Class: See Row 11 on Page 2.

    (c)
    PictureTel Corporation has sole voting power for 638,231 shares and sole dispositive power for 561,308 shares.


Item 5. Ownership of Five Percent or Less of a Class

    If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following / /.


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

    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.

Page 3 of 4



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.

    January 11, 2002
Date

 

 

/s/ 
WILLIAM R. PAAPE   
Signature

 

 

William R. Paape/Vice President

Name/Title

Page 4 of 4




QuickLinks

SIGNATURE
-----END PRIVACY-ENHANCED MESSAGE-----