As filed with the Securities and Exchange Commission on May 28, 1997
Registration No. 333-20223
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
____________________________
POST-EFFECTIVE AMENDMENT NO. 1
TO
FORM S-3
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
____________________________
IONICS, INCORPORATED
(Exact name of registrant as specified in its charter)
Massachusetts 04-2068530
(State or other jurisdic- (I.R.S. Employer
tion of incorporation Identification No.)
or organization)
_____________________________
65 Grove Street
Watertown, Massachusetts 02172
(Address, including zip code, and telephone number,
including area code of registrant's Principal Executive Offices)
_____________________________
Stephen Korn
Vice President and General Counsel
Ionics, Incorporated
65 Grove Street
Watertown, Massachusetts 02172
(617) 926-2500
(Name, address and telephone number, including
area code, of agent for service)
______________________________
Approximate date of commencement of proposed sale to the public:
Promptly after this registration statement becomes effective.
_______________________________
The Registrant hereby removes from registration under this
Registration Statement 31,498 shares of common stock, $1.00 par value
per share (the "Common Stock"), registered hereunder (all shares
originally registered hereunder being referred to as the "Offered
Shares") that have not been sold pursuant to this Registration
Statement. By the terms of this Registration Statement and an
agreement among the Registrant and certain holders of Offered Shares,
the Registrant was required to keep this Registration Statement
effective for a 90-day period. A total of 54,960 Offered Shares have
been sold or otherwise transferred by selling stockholders under this
Registration Statement. Pursuant to the Registrant's Undertaking in
Item 17 of this Registration Statement, the Registrant hereby removes
from registration the 31,498 Offered Shares that have not been sold
pursuant to this Registration Statement prior to the date hereof.
-2-
SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe that it
meets all of the requirements for filing on Form S-3 and has duly
caused this Post-Effective Amendment No. 1 to Registration Statement to
be signed on its behalf by the undersigned, thereunto duly authorized
in the Town of Watertown and Commonwealth of Massachusetts on the 28th
day of May, 1997.
IONICS, INCORPORATED
By:/s/Arthur L. Goldstein
Arthur L. Goldstein, Chairman of the Board,
President and Chief Executive Officer
-3-
Pursuant to the requirements of the Securities Act of 1933, this
Post-Effective Amendment No. 1 to the Registration Statement has been
signed by the following persons in the capacities and on the dates
indicated.
Signature Title Date
/s/Arthur L. Goldstein Chairman of the Board, May 28, 1997
Arthur L. Goldstein President and Chief
Executive Officer
(Principal Executive Officer)
/s/Robert J. Halliday Vice President, May 28, 1997
Robert J. Halliday Finance and
and Chief Financial Officer
(Principal Financial
and Accounting Officer)
/s/Douglas R. Brown* Director May 28, 1997
Douglas R. Brown
/s/William L. Brown* Director May 28, 1997
William L. Brown
/s/Arnaud de Vitry d'Avaucourt* Director May 28, 1997
Arnaud de Vitry d'Avaucourt
/s/William E. Katz* Director May 28, 1997
William E. Katz
/s/Robert B. Luick* Director May 28, 1997
Robert B. Luick
/s/John J. Shields* Director May 28, 1997
John J. Shields
Director
Daniel I.C. Wang
Director
Carl S. Sloane
/s/Mark S. Wrighton* Director May 28, 1997
Mark S. Wrighton
/s/Allen S. Wyett* Director May 28, 1997
Allen S. Wyett
*By:/s/Stephen Korn
Stephen Korn
Attorney-in-fact
-4-
