Filed Pursuant to Rule 424(b)(3) and (c)
File Number 333-83631
PROSPECTUS SUPPLEMENT DATED MARCH 20, 2000
to
Prospectus Dated September 16, 1999
12,050,000 Shares
Interleukin Genetics, Inc.
Common Stock
This Prospectus Supplement supplements the Prospectus dated September 16,
1999, as supplemented by Prospectus Supplement dated December 22, 1999 (the
"Prospectus"), of Interleukin Genetics, Inc. (the "Company") relating to the
public offering, which is not being underwritten, and sale by certain
shareholders of the Company or by their respective pledgees or donees, that
receive such shares as a gift or other non-sale related transfer (the "Selling
Shareholders") of 12,050,000 shares (the "Shares") of Common Stock, no par value
per share, of the Company (the "Common Stock"). This Prospectus Supplement
should be read in conjunction with the Prospectus, and this Prospectus
Supplement is qualified by reference to the Prospectus except to the extent that
the information herein contained supersedes the information contained in the
Prospectus. Capitalized terms used in this Prospectus Supplement and not
otherwise defined herein have the meanings specified in the Prospectus.
SELLING SHAREHOLDERS
Since the date of the Prospectus, certain Selling Shareholders (the
"Transferors") have made non-sale related transfers of shares of Common Stock
(the "Transferred Shares") to one (1) individual (the "Transferee"), and the
Transferee was not specifically named in the Prospectus. The Transferee has
requested that he be included as a Selling Shareholder in the Prospectus.
Accordingly, the Selling Shareholders section of the Prospectus is hereby
supplemented to include the Transferee (listed below), with respect to the
Transferred Shares. The total number of Shares offered by all Selling
Shareholders (including the Transferors and the Transferee), however, remains
unchanged because the Transferee is offering to sell only the Transferred
Shares.
<TABLE>
<CAPTION>
SHARES TO BE
SHARES OWNED PERCENTAGE SHARES TO OWNED AFTER PERCENTAGE
NAME PRIOR TO OFFERING OF CLASS BE SOLD OFFERING OF CLASS
---- ----------------- ---------- --------- ------------- ----------
<S> <C> <C> <C> <C> <C>
Joseph E. Sheehan, III 35,000(1) * 35,000 -0- -0-
</TABLE>
- ---------------
* represents less than 1%
(1) Joseph E. Sheehan, III owns Transferred Shares in the amount of 35,000
shares of Common Stock, 15,000 of which were gifted to him by Joseph E.
Sheehan, a Selling Shareholder more specifically identified in the
Prospectus, and 20,000 of which were distributed to him by the Joseph E.
Sheehan III Trust, a Selling Shareholder more specifically identified in
the Prospectus and of which Joseph E. Sheehan, III is a beneficiary.
