TWIN DISC INC — Director's Dealing 2005

Aug 23, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TWIN DISC INC (TWIN)
CIK: 0000100378
Period of Report: 2005-08-19

Reporting Person: JOYCE MICHAEL H (PRESIDENT/COO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-08-19	COMMON STOCK	M	3500	$21.875	Acquired	3500	Direct
2005-08-19	COMMON STOCK	M	3850	$26	Acquired	7350	Direct
2005-08-19	COMMON STOCK	S	3500	$32	Disposed	3850	Direct
2005-08-19	COMMON STOCK	S	500	$32.05	Disposed	3350	Direct
2005-08-19	COMMON STOCK	S	1900	$32.32	Disposed	1450	Direct
2005-08-19	COMMON STOCK	S	100	$32.28	Disposed	1350	Direct
2005-08-19	COMMON STOCK	S	1350	$32.2	Disposed	0	Direct
2005-08-22	COMMON STOCK	M	650	$22.9375	Acquired	650	Direct
2005-08-22	COMMON STOCK	S	600	$32.84	Disposed	50	Direct
2005-08-22	COMMON STOCK	S	50	$32.7	Disposed	0	Direct
2005-08-22	COMMON STOCK	M	4006	$28.75	Acquired	4006	Direct
2005-08-22	COMMON STOCK	S	350	$32.7	Disposed	3656	Direct
2005-08-22	COMMON STOCK	S	809	$34.26	Disposed	2847	Direct
2005-08-22	COMMON STOCK	S	506	$34.41	Disposed	2341	Direct
2005-08-22	COMMON STOCK	S	1441	$34.25	Disposed	900	Direct
2005-08-22	COMMON STOCK	S	400	$33.61	Disposed	500	Direct
2005-08-22	COMMON STOCK	S	100	$33.51	Disposed	400	Direct
2005-08-22	COMMON STOCK	S	210	$33.67	Disposed	190	Direct
2005-08-22	COMMON STOCK	S	190	$33.66	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2005-08-19	STOCK OPTIONS	$21.875	M	3500	Disposed	2006-08-12	COMMON STOCK (3500)	Direct
2005-08-19	STOCK OPTIONS	$26	M	3850	Disposed	2008-08-10	COMMON STOCK (3850)	Direct
2005-08-22	STOCK OPTIONS	$22.9375	M	650	Disposed	2008-10-16	COMMON STOCK (650)	Direct
2005-08-22	STOCK OPTIONS	$28.75	M	4006	Disposed	2007-08-11	COMMON STOCK (4006)	Direct