SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
________________________
SCHEDULE 13G
Information Statement Pursuant to Rules 13d-1 and 13d-2
Under the Securities Exchange Act of 1934
(Amendment No. )
Geron Corporation
_________________________________________________________________
(Name of Issuer)
Common Stock
_________________________________________________________________
(Title of Class of Securities)
0003741631
_________________________________________________________________
(CUSIP Number)
________________________
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CUSIP No. 0003741631 Page 2 of 8 Pages
_________________________________________________________________
1) Name of Reporting Person Domain Partners
S.S. or I.R.S. Identification II, L.P.
No. of Above Person
_________________________________________________________________
2) Check the Appropriate Box (a) [ X ]
if a Member of a Group (b) [ ]
_________________________________________________________________
3) SEC Use Only
_________________________________________________________________
4) Citizenship or Place Delaware
of Organization
_________________________________________________________________
Number of 5) Sole Voting 641,838 shares of
Shares Beneficially Power Common Stock
Owned by Each
Reporting Person
________________________________________
6) Shared Voting
Power -0-
________________________________________
7) Sole Disposi- 641,838 shares of
tive Power Common Stock
________________________________________
8) Shared Dis-
positive Power -0-
________________________________________
9) Aggregate Amount Beneficially 641,838 shares of
Owned by Each Reporting person Common Stock
_________________________________________________________________
10) Check if the Aggregate
Amount in Row (9)
Excludes Certain Shares
_________________________________________________________________
11) Percent of Class
Represented by 6.4%
Amount in Row (9)
_________________________________________________________________
12) Type of Reporting
Person PN
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CUSIP No. 0003741631 4444 Page 3 of 8 Pages
_________________________________________________________________
1) Name of Reporting Person Domain Associates
S.S. or I.R.S. Identification
No. of Above Person
_________________________________________________________________
2) Check the Appropriate Box (a) [ X ]
if a Member of a Group (b) [ ]
_________________________________________________________________
3) SEC Use Only
_________________________________________________________________
4) Citizenship or Place New Jersey
of Organization
_________________________________________________________________
Number of 5) Sole Voting 24,999 shares of
Shares Beneficially Power Common Stock
Owned by Each
Reporting Person ________________________________________
6) Shared Voting
Power -0-
________________________________________
7) Sole Disposi- 24,999 shares of
tive Power Common Stock, of
which 21,568 are
restricted and
subject to vesting
________________________________________
8) Shared Dis-
positive Power -0-
________________________________________
9) Aggregate Amount Beneficially 24,999 shares of
Owned by Each Reporting person Common Stock, of
which 21,568 are
restricted and
subject to vesting
_________________________________________________________________
10) Check if the Aggregate
Amount in Row (9)
Excludes Certain Shares
_________________________________________________________________
11) Percent of Class
Represented by 0.3%
Amount in Row (9)
_________________________________________________________________
12) Type of Reporting
Person PN
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CUSIP No. 0003741631 Page 4 of 8 Pages
Schedule 13G
____________
Item 1(a) - Name of Issuer: Geron Corporation
Item 1(b) - Address of Issuer's Principal Executive Offices:
200 Constitution Drive
Menlo Park, CA 94025
Item 2(a) - Name of Person Filing:
This statement is being filed by Domain Partners II, L.P., a
Delaware limited partnership ("Domain II"), and Domain
Associates, a New Jersey general partnership ("DA")
(collectively, the "Reporting Persons").
Item 2(b) - Address of Principal Business Office:
One Palmer Square
Princeton, NJ 08542
Item 2(c) - Place of Organization:
Domain II: Delaware
DA: New Jersey
Item 2(d) - Title of Class of Securities:
Common Stock
Item 2(e) - CUSIP Number: 0003741631
Item 3 - Statements Filed Pursuant to Rules 13d-1(b) or 13d-
2(b):
Not applicable.
Item 4 - Ownership.
(a) Amount Beneficially Owned:
Domain II: 641,838 shares of Common Stock
DA: 24,999 shares of Common Stock, of which 21,568 are
restricted and subject to vesting
(b) Percent of Class:
Domain II: 6.4%
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CUSIP No. 0003741631 Page 5 of 8 Pages
DA: 0.3%
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote:
Domain II: 641,838 shares of Common Stock
DA: 24,999 shares of Common Stock
(ii) shared power to vote or to direct the vote: -0-
(iii) sole power to dispose or to direct the disposition of:
Domain II: 641,838 shares of Common Stock
DA: 24,999 shares of Common Stock, of which 21,568 are
restricted and subject to vesting
(iv) shared power to dispose or to direct the disposition
of: -0-
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 Company:
Not applicable.
Item 8 - Identification and Classification of Members of
the Group:
See Exhibit 2.
Item 9 - Notice of Dissolution of Group:
Not applicable.
Item 10 - Certification:
Not applicable.
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CUSIP No. 0003741631 Page 6 of 8 Pages
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.
DOMAIN PARTNERS II, L.P.
By: One Palmer Square Associates II L.P.,
General Partner
By /s/ Jesse I. Treu
General Partner
DOMAIN ASSOCIATES
By /s/ Jesse I. Treu
General Partner
Date: January 31, 1997
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CUSIP No. 0003741631 Page 7 of 8 Pages
EXHIBIT 1
AGREEMENT OF
DOMAIN PARTNERS II, L.P.,
AND
DOMAIN ASSOCIATES
PURSUANT TO RULE 13d-1(f)
_________________________
The undersigned hereby agree that the Information Statement on
Schedule 13G to which this Agreement is annexed as Exhibit 1 is filed on
behalf of each of them in accordance with the provisions of 13d-1(f) under
the Securities Exchange Act of 1934, as amended.
DOMAIN PARTNERS II, L.P.
By: One Palmer Square Associates II L.P.,
General Partner
By /s/ Jesse I. Treu
General Partner
DOMAIN ASSOCIATES
By /s/ Jesse I. Treu
General Partner
Date: January 31, 1997
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CUSIP No. 0003741631 Page 8 of 8 Pages
EXHIBIT 2
Identification and Classification
of Members of the Group
_________________________________
Domain Partners II, L.P. and Domain Associates are filing this
statement on Schedule 13G as a group.
Domain Partners II, L.P. is a Delaware limited partnership. Its
sole general partner is One Palmer Square Associates II, L.P., a Delaware
limited partnership.
Domain Associates is a New Jersey general partnership.
