<PAGE>
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 1)*
Cerus Corporation
----------------------------------------
(Name of Issuer)
Common Stock, par value $ .001 per share
----------------------------------------
(Title of Class of Securities)
157085101
------------
(CUSIP Number)
Check the following box if a fee is being paid with this statement. [_] (A fee
is not required only if the filing person: (1) has a previous statement on file
reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7.)
*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).
SEC 1745 (2-95)
Page 1 of 15 pages
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CUSIP NO. 157085101 13G PAGE 2 OF 15 PAGES
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- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Coral Partners II, a limited Partnership
SEC ID #0000924591
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [X]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF 426,215
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
0
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING 426,215
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
0
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
426,215
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11
4.53%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
PN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
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CUSIP NO. 157085101 PAGE 3 OF 15 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Coral Management Partners II, Limited Partnership
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [X]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF 426,215
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
0
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING 426,215
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
0
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
426,215
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11
4.53%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
PN
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
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CUSIP NO. 157085101 PAGE 4 OF 15 PAGES
- ----------------------- 13G ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Coral Partners IV, Limited Partnership
SEC ID #0000922910
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [X]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF 463,749
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
0
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING 463,749
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
0
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
463,749
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11
4.92%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
PN
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
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CUSIP NO. 157085101 PAGE 5 OF 15 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Coral Management Partners IV, Limited Partnership
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [X]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF 463,749
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
0
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING 463,749
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
0
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
463,749
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11
4.92%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
PN
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
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CUSIP NO. 157085101 PAGE 6 OF 15 PAGES
- ----------------------- 13G ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Yuval Almog
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [X]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
United States
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF 29,987
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
892,764
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING 29,987
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
892,764
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
922,751
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11
9.80%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IN
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
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CUSIP NO. 157085101 Page 7 of 15 Pages
- ----------------------- ----------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Peter H. McNerney
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [X]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
United States
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF 24,254
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
889,964
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING 24,254
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
889,964
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
914,218
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11
9.71%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IN
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
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CUSIP NO. 157085101 PAGE 8 OF 15 PAGES
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- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Linda L. Watchmaker
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [X]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
United States
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF 3,434
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
889,964
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING 3,434
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
889,964
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
893,398
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11
9.49%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IN
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Item 1. Issuer's Name and Address of Principal Executive Offices:
(a) Cerus Corporation
(b) 2525 Stanwell Drive, Suite 300
Concord, CA 94520
Item 2. Information Concerning Person Filing:
(a) Filing Persons:
Entities:
Coral Partners IV, Limited Partnership ("CP IV")
Coral Management Partners IV, Limited Partnership ("CMP IV")
Coral Partners II, a limited partnership ("CP II")
Coral Management Partners II, Limited Partnership ("CMP II")
Individuals:
Yuval Almog
Peter H. McNerney
Linda L. Watchmaker
(b) Principal Business Address:
60 South Sixth Street
Suite 3510
Minneapolis, MN 55402
(c) Citizenship/Place of Organization
Entities:
Coral Partners IV ("CP IV") Delaware
Coral Management Partners IV ("CMP IV") Delaware
Coral Partners II ("CP II") Delaware
Coral Management Partners II ("CMP II") Delaware
Individuals:
Yuval Almog United States
Peter H. McNerney United States
Linda L. Watchmaker United States
(d) Title of Class of Securities: Common Stock
(e) CUSIP No. 157085101
Page 9 of 15
<PAGE>
Item 3. Status of Person Filing:
Not applicable.
Item 4. Ownership:
ENTITIES CP IV CMP IV CP II CMP II
------- ------- ------- -------
(a)Beneficial Ownership 463,749* 463,749* 426,215* 426,215*
(b)Percentage of Class 4.92% 4.92% 4.53% 4.53%
(c)(i)Sole Voting Power: 463,749 463,749 426,215 426,215
(ii)Shared Voting Power: 0 0 0 0
(iii)Sole Dispositive Power: 463,749 463,749 426,215 426,215
(iv)Shared Dispositive Power: 0 0 0 0
INDIVIDUALS: Almog McNerney Watchmaker**
-------- -------- ------------
(a)Beneficial Ownership 922,751* 914,218* 893,398*
(b)Percentage of Class 9.80% 9.71% 9.49%
(c)(i)Sole Voting Power: 29,987 24,254 3,434
(ii)Shared Voting Power: 892,764 889,964 889,964
(iii)Sole Dispositive Power: 29,987 24,254 3,434
(iv)Shared Dispositive Power: 892,764 889,964 889,964
* Pursuant to Rule 13d-4, the reporting person disclaims beneficial ownership of
these securities except to the extent of his/her pecuniary interest therein.
**Ms. Watchmaker's ownership relates to her direct ownership and the ownership
as it relates to CP II and CMP II.
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 <D063>. *
Item 6. Ownership of More than Five Percent on Behalf of Another Person:
Not applicable.
Item 7. Identification and Classification of Subsidiary:
Not applicable.
Page 10 of 15
<PAGE>
Item 8. Identification and Classification of Group:
Not applicable.
Item 9. Notice of Dissolution of Group:
Not applicable.
Item 10. Certification:
Not applicable.
Page 11 of 15
<PAGE>
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.
Dated: February 3, 1999
Coral Partners II, a limited partnership
By: Coral Management Partners II, Limited Partnership,
Its: General Partner
/s/ Linda L. Watchmaker
- --------------------------
Linda L. Watchmaker
General Partner
Coral Partners IV, Limited Partnership
By: Coral Management Partners IV, Limited Partnership
Its: General Partner
/s/ Yuval Almog
- --------------------------
Yuval Almog
General Partner
Coral Management Partners II, Limited Partnership,
By: General Partner
/s/ Linda L. Watchmaker
- --------------------------
Linda L. Watchmaker
General Partner
Coral Management Partners IV, Limited Partnership
By: General Partner
/s/ Yuval Almog
- -------------------------
Yuval Almog
General Partner
By /s/ Yuval Almog By /s/ Peter H. McNerney By /s/ Linda L. Watchmaker
------------------ --------------------- -----------------------
Yuval Almog Peter H, McNerney Linda L. Watchmaker
Page 12 of 15
<PAGE>
EXHIBIT INDEX
Sequentially
Exhibit Document Description Numbered Page
- ------- -------------------- -------------
A Agreement of Joint Filing 14
Page 13 of 15
<PAGE>
EXHIBIT A
Agreement of Joint Filing
Each of the undersigned hereby agrees that they are filing jointly pursuant
to Rule 13d-1(f)(1) of the Securities Exchange Act of 1934, as amended, the
Statement dated February 3, 1999, containing the information required by
Schedule 13G, for the shares of Common Stock of Cerus Corporation which they
each beneficially hold.
Dated: February 3, 1999
Coral Partners II, a limited partnership
By: Coral Management Partners II, Limited Partnership,
Its: General Partner
/s/ Linda L. Watchmaker
- --------------------------
Linda L. Watchmaker
General Partner
Coral Partners IV, Limited Partnership
By: Coral Management Partners IV, Limited Partnership
Its: General Partner
/s/ Yuval Almog
- --------------------------
Yuval Almog
General Partner
Coral Management Partners II, Limited Partnership,
By: General Partner
/s/ Linda L. Watchmaker
- --------------------------
Linda L. Watchmaker
General Partner
Coral Management Partners IV, Limited Partnership
By: General Partner
/s/ Yuval Almog
- --------------------------
Yuval Almog
General Partner
Page 14 of 15
<PAGE>
By /s/ Yuval Almog
-----------------------
Yuval Almog
By /s/ Peter H. McNerney By /s/ Linda L. Watchmaker
----------------------- --------------------------
Peter H. McNerney Linda L. Watchmaker
Page 15 of 15
