TWIN DISC INC — Director's Dealing 2004

Aug 13, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TWIN DISC INC (TDI)
CIK: 0000100378
Period of Report: 2004-08-12

Reporting Person: JOYCE MICHAEL H (PRESIDENT/COO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-08-12	COMMON STOCK	M	4500	$20	Acquired	4500	Direct
2004-08-12	COMMON STOCK	S	500	$23.81	Disposed	4000	Direct
2004-08-12	COMMON STOCK	S	1800	$23.5	Disposed	2200	Direct
2004-08-12	COMMON STOCK	S	200	$23.71	Disposed	2000	Direct
2004-08-12	COMMON STOCK	S	1800	$23.11	Disposed	200	Direct
2004-08-12	COMMON STOCK	S	200	$23.4	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2004-08-12	STOCK OPTIONS	$20	M	4500	Disposed	2004-08-15	COMMON STOCK (4500)	Direct