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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. 3)*
HEMASURE INC.
(Name of Issuer)
COMMON STOCK, $.01 PAR VALUE PER SHARE
(Title of Class of Securities)
423504 10 9
(CUSIP Number)
DECEMBER 31, 1999
(Date of Event Which Requires Filing of this Statement)
*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 (the "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. 423504 10 9 Page 2 of 5
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1 NAMES OF REPORTING PERSONS.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Sepracor Inc.
22-2536587
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
Not Applicable
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3 SEC USE ONLY
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4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
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NUMBER OF SHARES 5 SOLE VOTING POWER
BENEFICIALLY OWNED
BY EACH REPORTING 4,333,334 shares
PERSON WITH ---------------------------------------------------------
6 SHARED VOTING POWER
0 shares
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7 SOLE DISPOSITIVE POWER
4,333,334 shares
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8 SHARED DISPOSITIVE POWER
0 shares
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9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
4,333,334 shares
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10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
Not Applicable
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11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
27.4%
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12 TYPE OF REPORTING (SEE INSTRUCTIONS)
CO
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CUSIP No. 423504 10 9 Page 3 of 5
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ITEM 1(a) NAME OF ISSUER:
HemaSure Inc.
ITEM 1(b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:
140 Locke Drive
Marlborough, MA 01752
ITEM 2(a) NAME OF PERSON FILING:
Sepracor Inc.
ITEM 2(b) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:
111 Locke Drive
Marlborough, MA 01752
ITEM 2(c) CITIZENSHIP:
Delaware
ITEM 2(d) TITLE OF CLASS OF SECURITIES:
Common Stock, $.01 par value per share ("Common Stock")
ITEM 2(e) CUSIP NUMBER:
CUSIP No. 423504 10 9
ITEM 3 STATUS IF FILED PURSUANT TO RULES 13d-1(b) OR 13d-2(b) OR (c):
Not Applicable
ITEM 4 OWNERSHIP:
(a) Amount Beneficially Owned: 4,333,334 shares
(b) Percent of Class: 27.4%
(c) Number of Shares as to which the person has:
(i) Sole power to vote or to direct the vote: 4,333,334
shares
(ii) Shared power to vote or to direct the vote: 0
shares
(iii) Sole power to dispose or to direct the
disposition of: 4,333,334 shares
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CUSIP No. 423504 10 9 Page 4 of 5
(iv) Shared power to dispose or to direct the
disposition of: 0 shares
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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.
Not Applicable
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CUSIP No. 423504 10 9 Page 5 of 5
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.
March 15, 2000
SEPRACOR INC.
By: /s/ Robert F. Scumaci
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Robert F. Scumaci
Senior Vice President,
Finance and Administration
