TWIN DISC INC — Director's Dealing 2011

May 27, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TWIN DISC INC (TWIN)
CIK: 0000100378
Period of Report: 2011-05-27

Reporting Person: RAYBURN DAVID B (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-27	Common Stock	M	4000	$3.7625	Acquired	20348	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-27	Stock Options	$3.7625	M	4000	Disposed	2011-08-13	Common Stock (4000)	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Options	$3.2525	2012-10-18	Common Stock (4000)	4000	Direct
Stock Options	$6.225	2014-10-15	Common Stock (1200)	1200	Direct
Stock Options	$10.11	2015-10-21	Common Stock (1200)	1200	Direct
Stock Options	$18.005	2016-10-20	Common Stock (1200)	1200	Direct
Stock Options	$27.545	2017-10-19	Common Stock (1200)	1200	Direct
Stock Options	$10.01	2018-10-17	Common Stock (1200)	1200	Direct
Stock Options	$14.61	2019-10-16	Common Stock (1200)	1200	Direct