QUICKTURN DESIGN SYSTEMS INC

Q: Mar 31 1999

FY: Dec 31 1998

Q: Mar 31 1998

Q: Sep 30 1998

Q: Jun 30 1998

Q: Jun 30 1998

Q: Sep 30 1998

Q: Mar 31 1998

FY: Dec 31 1998

Q: Sep 30 1998

Q: Jun 30 1998

Q: Mar 31 1998

FY: Dec 31 1997

Q: Sep 30 1997

Q: Aug 14 1997

Q: Mar 31 1997

FY: Mar 31 1997

Q: Sep 30 1996

Q: Aug 13 1996

Q: May 14 1996

5,7

5,7

5,7

5,7

5,7

5,7

2,7

7

5,7

2,5,7

Certification of termination of registration of a class of securities (Section 12(g))

No description available

No description available

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

No description available

No description available

Additional Information for Proxy Statement/ Votes

Additional proxy soliciting materials filed by a non-management party

Additional proxy soliciting materials filed by a non-management party

Additional proxy soliciting materials filed by a non-management party

Additional Information for Proxy Statement/ Votes

No description available

No description available

Additional Information for Proxy Statement/ Votes

No description available

Additional proxy soliciting materials filed by a non-management party

Additional proxy soliciting materials filed by a non-management party

Additional Information for Proxy Statement/ Votes

Additional proxy soliciting materials filed by a non-management party

Additional Information for Proxy Statement/ Votes

Additional proxy soliciting materials filed by a non-management party

Additional proxy soliciting materials filed by a non-management party

Additional proxy soliciting materials filed by a non-management party

Additional Information for Proxy Statement/ Votes

MILTON ARBITRAGE PARTNERS LLC

KOPP INVESTMENT ADVISORS INC

KOPP INVESTMENT ADVISORS INC

MILTON ARBITRAGE PARTNERS LLC

MILTON ARBITRAGE PARTNERS LLC

CADENCE DESIGN SYSTEMS INC

QUICKTURN DESIGN SYSTEMS INC

MENTOR GRAPHICS CORP

STATE OF WISCONSIN INVESTMENT BOARD

CADENCE DESIGN SYSTEMS INC

MENTOR GRAPHICS CORP

QUICKTURN DESIGN SYSTEMS INC

MENTOR GRAPHICS CORP

QUICKTURN DESIGN SYSTEMS INC

MENTOR GRAPHICS CORP

MENTOR GRAPHICS CORP

QUICKTURN DESIGN SYSTEMS INC

MENTOR GRAPHICS CORP

QUICKTURN DESIGN SYSTEMS INC

QUICKTURN DESIGN SYSTEMS INC