1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.1)* American Shared Hospital Services - -------------------------------------------------------------------------------- (Name of Issuer) Common Stock, no par value per share - -------------------------------------------------------------------------------- (Title of Class of Securities) 029595 10 5 --------------------------------------------- (CUSIP Number) March 8, 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: [X] 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 disclosure provided in a prior cover page. The information required on 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, as amended ("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). Page 1 of 10 pages
2 CUSIP NO. 029595 10 5 - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON American International Group, Inc. I.R.S. Identification No. 13-2592361 - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [ ] (b) [ ] - -------------------------------------------------------------------------------- 3. SEC USE ONLY - -------------------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OF ORGANIZATION Incorporated under the laws of the State of Delaware - -------------------------------------------------------------------------------- 5. SOLE VOTING POWER NUMBER OF 0 SHARES -------------------------------------------------- BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 0 EACH -------------------------------------------------- REPORTING 7. SOLE DISPOSITIVE POWER PERSON 0 WITH -------------------------------------------------- 8. SHARED DISPOSITIVE POWER 0 - -------------------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0 - -------------------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ] - -------------------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0 - -------------------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON HC Page 2 of 10
3 CUSIP NO. 029595 10 5 - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON SunAmerica Inc. I.R.S. Identification No. 95-4715639 - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [ ] (b) [ ] - -------------------------------------------------------------------------------- 3. SEC USE ONLY - -------------------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OF ORGANIZATION Organized under the laws of the State of Delaware - -------------------------------------------------------------------------------- 5. SOLE VOTING POWER NUMBER OF 0 SHARES -------------------------------------------------- BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 0 EACH -------------------------------------------------- REPORTING 7. SOLE DISPOSITIVE POWER PERSON 0 WITH -------------------------------------------------- 8. SHARED DISPOSITIVE POWER 0 - -------------------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0 - -------------------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ] - -------------------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0 - -------------------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON OO Page 3 of 10
4 CUSIP NO. 029595 10 5 - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON SunAmerica Life Insurance Company I.R.S. Identification No. 52-0502540 - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [ ] (b) [ ] - -------------------------------------------------------------------------------- 3. SEC USE ONLY - -------------------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OF ORGANIZATION Incorporated under the laws of the State of Arizona - -------------------------------------------------------------------------------- 5. SOLE VOTING POWER NUMBER OF 0 SHARES -------------------------------------------------- BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 0 EACH -------------------------------------------------- REPORTING 7. SOLE DISPOSITIVE POWER PERSON 0 WITH -------------------------------------------------- 8. SHARED DISPOSITIVE POWER 0 - -------------------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0 - -------------------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ] - -------------------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0 - -------------------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON IC Page 4 of 10
5 CUSIP NO. 029595 10 5 - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Anchor National Life Insurance Company I.R.S. Identification No. 86-0198983 - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [ ] (b) [ ] - -------------------------------------------------------------------------------- 3. SEC USE ONLY - -------------------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OF ORGANIZATION Organized under the laws of the State of Arizona - -------------------------------------------------------------------------------- 5. SOLE VOTING POWER NUMBER OF 0 SHARES -------------------------------------------------- BENEFICIALLY 6. SHARED VOTING OWNED BY 0 EACH -------------------------------------------------- REPORTING 7. SOLE DISPOSITIVE POWER PERSON 0 WITH -------------------------------------------------- 8. SHARED DISPOSITIVE POWER 0 - -------------------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0 - -------------------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ] - -------------------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0 - -------------------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON IC Page 5 of 10
6 ITEM 1 (a). NAME OF ISSUER: American Shared Hospital Services ITEM 1 (b). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES: Four Embarcadero Center Suite 3620 San Francisco, California 94111 ITEM 2 (a). NAME OF PERSON(S) FILING: American International Group, Inc. SunAmerica Inc. SunAmerica Life Insurance Company Anchor National Life Insurance Company ITEM 2 (b). ADDRESS OF PRINCIPAL BUSINESS OFFICE(S): American International Group, Inc. 70 Pine Street New York, New York 10270 SunAmerica Inc. 1 SunAmerica Center Century City Los Angeles, California 90067 SunAmerica Life Insurance Company 1 SunAmerica Center Century City Los Angeles, California 90067 Anchor National Life Insurance Company 1 SunAmerica Center Century City Los Angeles, California 90067 ITEM 2 (c). CITIZENSHIP: The information requested hereunder is set forth under Item 4 of the cover pages to this Amendment No.1 to Schedule 13G. ITEM 2 (d). TITLE OF CLASS OF SECURITIES: Common Stock, no par value per share ITEM 2 (e). CUSIP NUMBER: 029595 10 5 Page 6 of 10
7 ITEM 3. TYPE OF PERSONS FILING: American International Group, Inc.: (g) Parent Holding Company, in accordance with Rule 13d-1(b) (ii) (G) promulgated under the Securities Exchange Act of 1934, as amended (the "Act") SunAmerica Inc.: Passive Investor pursuant to Rule 13d-1(c) SunAmerica Life Insurance Company and Anchor National Life Insurance Company: (c) Insurance Company as defined in Section 3(a)(19) of the Act ITEM 4. OWNERSHIP. (a) through (c). The information requested hereunder is set forth under Items 5 through 9 and Item 11 of the cover pages to this Amendment No. 1 to Schedule 13G. ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF 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 of the class of securities, check the following [X]. 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. See Exhibit 1 attached hereto for the information requested hereunder with respect to the relevant subsidiaries of American International Group, Inc. ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP. Not applicable. ITEM 9. NOTICE OF DISSOLUTION OF GROUP. Not applicable. Page 7 of 10
8 ITEM 10. CERTIFICATION. (a) By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purpose or effect. (b) 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: April 7, 1999 AMERICAN INTERNATIONAL GROUP, INC. By /s/ Kathleen E. Shannon ------------------------------------ Name: Kathleen E. Shannon Title: Vice President and Secretary SUNAMERICA INC. By /s/ Jay S. Wintrob ------------------------------------ Name: Jay S. Wintrob Title: Vice Chairman SUNAMERICA LIFE INSURANCE COMPANY By /s/ Jay S. Wintrob ------------------------------------ Name: Jay S. Wintrob Title: Executive Vice President ANCHOR NATIONAL LIFE INSURANCE COMPANY By /s/ Jay S. Wintrob ------------------------------------ Name: Jay S. Wintrob Title: Executive Vice President Page 8 of 10
9 EXHIBIT INDEX Exhibit 1 Identification and Classification of the Subsidiaries Which Acquired the Security Being Reported on by the Parent Holding Company Page 9 of 10
1 Exhibit 1 IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY. American International Group, Inc. -- Subsidiary Information SunAmerica Inc.: Passive Investor pursuant to Rule 13d-1(c) Category Symbol: OO SunAmerica Life Insurance Company: (c) Insurance Company as defined in Section 3(a)(19) of the Act Category Symbol: IC Anchor National Life Insurance Company (c) Insurance Company as defined in Section 3(a)(19) of the Act Category Symbol: IC Page 10 of 10