<PAGE>
As filed with the Securities and Exchange Commission on August 3, 1999.
Registration No. 333-61425
- - - --------------------------------------------------------------------------------
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
-----------------------------
AMENDMENT NO. 3 TO
FORM S-1
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
-----------------------------
DIGI INTERNATIONAL INC.
(Exact name of the Registrant as specified in its charter)
<TABLE>
<CAPTION>
DELAWARE 3576 41-1532464
<S> <C> <C>
(State or other jurisdiction of (Primary Standard Industrial (I.R.S. Employer
incorporation or organization) Classification Code Number) Identification No.)
</TABLE>
11001 BREN ROAD EAST
MINNETONKA, MINNESOTA 55343
(612) 912-3444
(Address and telephone number of the Registrant's
principal executive offices)
SUBRAMANIAN KRISHNAN
CHIEF FINANCIAL OFFICER
11001 BREN ROAD EAST
MINNETONKA, MINNESOTA 55343
(612) 912-3444
(Name, address and telephone number of agent for service)
---------------------------
copy to:
James E. Nicholson
Faegre & Benson LLP
2200 Norwest Center
90 South Seventh Street
Minneapolis, Minnesota 55402
-----------------------------
- - - --------------------------------------------------------------------------------
- - - --------------------------------------------------------------------------------
REMOVAL OF SECURITIES FROM REGISTRATION
The offering described in the Registration Statement has terminated.
The Registrant hereby removes from registration 396,017 shares of its Common
Stock, $.01 par value per share, representing the securities that remain unsold
at the termination of the offering. This post-effective amendment is being filed
solely to remove these securities from registration.
- - - --------------------------------------------------------------------------------
- - - --------------------------------------------------------------------------------
<PAGE>
SIGNATURE
Pursuant to the requirements of the Securities Act of 1933 and Rule 478
thereunder, the Registrant has duly caused this Amendment No. 3 to Registration
Statement No. 333-61425 to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Minnetonka, State of Minnesota, on August 3,
1999.
DIGI INTERNATIONAL INC.
By /s/ Subramanian Krishnan
----------------------------------
Subramanian Krishnan
CHIEF FINANCIAL OFFICER