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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. )*
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Aastrom Biosciences, Inc.
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(Name of Issuer)
Common Stock, No Par Value
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(Title of Class of Securities)
00253U107
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(CUSIP Number)
August 1, 1997
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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).
Page 1 of 4 pages
CUSIP NO. 00253U107
---------
______________________________________________________________________________
1. NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).
Pfizer Inc.
13-5315170
______________________________________________________________________________
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
______________________________________________________________________________
5. SOLE VOTING POWER
NUMBER OF 864,546
SHARES _______________________________________________________________
BENEFICIALLY 6. SHARED VOTING POWER
OWNED BY 0
EACH
REPORTING _______________________________________________________________
PERSON 7. SOLE DISPOSITIVE POWER
WITH: 864,546
_______________________________________________________________
8. SHARED DISPOSITIVE POWER
0
______________________________________________________________________________
9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
864,546
______________________________________________________________________________
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)
CO
______________________________________________________________________________
Page 2 of 4 pages
ITEM 1.
(a) Name of Issuer:
Aastrom Biosciences, Inc.
(b) Address of Issuer's Principal Executive Offices:
24 Frank Lloyd Wright Drive
P. O. Box 376
Ann Arbor, MI 48106
ITEM 2.
(a) Name of Person Filing:
Pfizer Inc.
(b) Address of Principal Business Office or, if none, Residence:
235 East 42nd Street
New York, NY 10017
(c) Citizenship:
Delaware
(d) Title of Class of Securities:
Common Stock, No Par Value
(e) CUSIP Number:
00253U107
ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO RULE 13d-1(b) OR RULE 13d-2(b)
OR (c), CHECK WHETHER THE PERSON FILING IS A:
Not applicable
ITEM 4. OWNERSHIP
(a) Amount beneficially owned: 864,546
(b) Percent of class: 6.4%
(c) Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote: 864,546
(ii) Shared power to vote or to direct the vote: 0
(iii) Sole power to dispose or to direct the disposition of:
864,546
(iv) Shared power to dispose or to direct the disposition of: 0
Page 3 of 4 pages
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
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: May 28, 1998
PFIZER INC.
By /s/ MARGARET M. FORAN
----------------------------
Name: Margaret M. Foran
Title: Assistant Secretary
Page 4 of 4 pages