Otter Tail Corp — Director's Dealing 2009

Dec 17, 2009

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Otter Tail Corp (OTTR)
CIK: 0001466593
Period of Report: 2009-12-15

Reporting Person: ERICKSON JOHN D (Director, President & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2009-12-15	Common Stock	G	4000	$0.00	Disposed	96852	Direct
2009-12-15	Common Stock	M	10000	$19.75	Acquired	106852	Direct
2009-12-15	Common Stock	S	100	$23.30	Disposed	106752	Direct
2009-12-15	Common Stock	S	100	$23.31	Disposed	106652	Direct
2009-12-15	Common Stock	S	100	$23.33	Disposed	106552	Direct
2009-12-15	Common Stock	S	300	$23.34	Disposed	106252	Direct
2009-12-15	Common Stock	S	200	$23.35	Disposed	106052	Direct
2009-12-15	Common Stock	S	100	$23.41	Disposed	105952	Direct
2009-12-15	Common Stock	S	500	$23.43	Disposed	105452	Direct
2009-12-15	Common Stock	S	600	$23.46	Disposed	104852	Direct
2009-12-15	Common Stock	S	100	$23.47	Disposed	104752	Direct
2009-12-15	Common Stock	S	100	$23.48	Disposed	104652	Direct
2009-12-15	Common Stock	S	900	$23.49	Disposed	103752	Direct
2009-12-15	Common Stock	S	500	$23.50	Disposed	103252	Direct
2009-12-15	Common Stock	S	200	$23.51	Disposed	103052	Direct
2009-12-15	Common Stock	S	1500	$23.52	Disposed	101552	Direct
2009-12-15	Common Stock	S	500	$23.53	Disposed	101052	Direct
2009-12-15	Common Stock	S	900	$23.54	Disposed	100152	Direct
2009-12-15	Common Stock	S	1000	$23.55	Disposed	99152	Direct
2009-12-15	Common Stock	S	1100	$23.56	Disposed	98052	Direct
2009-12-15	Common Stock	S	200	$23.565	Disposed	97852	Direct
2009-12-15	Common Stock	S	300	$23.57	Disposed	97552	Direct
2009-12-15	Common Stock	S	500	$23.575	Disposed	97052	Direct
2009-12-15	Common Stock	S	200	$23.58	Disposed	96852	Direct
2009-12-15	Common Stock	G	4000	$0.00	Acquired	4000	Indirect
2009-12-15	Common Stock	S	100	$23.28	Disposed	3900	Indirect
2009-12-15	Common Stock	S	299	$23.29	Disposed	3601	Indirect
2009-12-15	Common Stock	S	101	$23.30	Disposed	3500	Indirect
2009-12-15	Common Stock	S	400	$23.31	Disposed	3100	Indirect
2009-12-15	Common Stock	S	700	$23.32	Disposed	2400	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2009-12-15	Stock Options (right to buy)	$19.75	M	10000	Disposed	2010-04-10	Common Stock (25000)	Direct
2009-12-16	Stock Options (right to buy)	$19.75	M	10000	Disposed	2010-04-10	Common Stock (25000)	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Options (right to buy)	$26.25	2011-04-09	Common Stock (75000)	75000	Direct

Footnotes

F1: All sales and gifts reported in this Form 4 were effected pursuant to Rule 10b5-1(c) trading plans.

F2: Trading Plan was adopted by the reporting person on 3/6/2008.

F3: These shares were gifted from the joint account with his wife through Merrill Lynch to The John and Kim Erickson Family Foundation, a non-profit charitable corporation under Section 501(c)(3) of the Internal Revenue Code also held with Merrill Lynch.

F4: Total direct holdings include shares jointly held with spouse through Merrill Lynch and shares acquired individually pursuant to Restricted Stock Awards and Performance Award distributions.

F5: Trading Plan was adopted by The John and Kim Erickson Family Foundation, a non-profit charitable corporation under Section 501(c)(3) of the Internal Revenue Code on 5/7/2008.

F6: Stock options vest in cumulative annual installments of 25% beginning the date shown.