<PAGE>
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. _____2_____)*
Serologicals Corp
(Name of Issuer)
Common Stock
(Title of Class of Securities)
81752310
(CUSIP Number)
December 31, 1998
(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)
[ ] 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 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 ("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).
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CUSIP No. 81752310 13G Page 2 of 4 Pages
-------- --- -----
- --------------------------- ----------------------
- ---------- ---------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Warburg Pincus Asset Management, Inc. 13-2673503
- ---------- ---------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
(a)[ ]
(b)[ ]
Not applicable
- ---------- ---------------------------------------------------------------------
3 SEC USE ONLY
- ---------- ---------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
- -------------------- ------ ----------------------------------------------------
5 SOLE VOTING POWER
753,525
------ ----------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY 844,775
OWNED BY
EACH ------ ----------------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH 1,687,012
------ ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
0
- ---------- ---------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,687,012
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10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
(SEE INSTRUCTIONS)
Not applicable
- ---------- ---------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
6.94%
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12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
IA
- ---------- ---------------------------------------------------------------------
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Item 1(a): Name of Issuer:
- ---------- ---------------
Serologicals Corp
Item 1(b): Address of Issuer's Principal Executive Offices:
- ---------- ------------------------------------------------
780 Park North Blvd.
Clarkston, GA 30021
Item 2(a) Name of Person Filing
- --------- ---------------------
Warburg Pincus Asset Management, Inc.
Item 2(b): Address of Principal Business Office:
- ---------- -------------------------------------
466 Lexington Avenue, New York, New York 10017
Item 2(c): Citizenship:
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Delaware
Item 2(d): Title of Class of Securities:
- ---------- -----------------------------
Common Stock
Item 2(e): CUSIP Number:
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81752310
Item 3: If the reporting person is an investment adviser
- ------- in accordance with ss. 240.13d-1(b)(1)(ii)(E),
check this box. [X]
Item 4: Ownership:
- ------- ----------
(a) Amount beneficially owned: 1,687,012.
(b) Percent of class: 6.94%.
(c) Number of shares as to which the person
has:
(i) Sole power to vote or to direct
the vote 753,325.
(ii) Shared power to vote or to direct
the vote 844,775.
(iii) Sole power to dispose or to
direct the disposition of 1,687,012.
(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.
Page 3 of 4 Pages
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Item 6: Ownership of More than Five Percent on Behalf of
- ------- ------------------------------------------------
Another Person:
---------------
Warburg Pincus Asset Management, Inc. ("WPAM") is
an Investment Adviser registered with the United
States Securities and Exchange Commission. WPAM
serves as investment adviser to many accounts
including various registered investment companies.
The securities which are the subject of this
report are owned by our accounts. In this report
no account owned more than 5%.
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 acquired and are held
in the ordinary course of business and 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.
Dated: January 8, 1999
By:/s/ Linda S. Iovan
-------------------------
Name: Linda S. Iovan
Title: Vice President
Page 4 of 4 Pages
