Otter Tail CFO reports 4,355 shares on Form 3

Otter Tail Corp VP and Chief Financial Officer Nelson Tyler J filed an initial ownership report showing direct holdings of 4,355 shares of Common Stock.

Rhea-AI Filing Summary

Otter Tail Corp VP and Chief Financial Officer Nelson Tyler J filed an initial ownership report showing direct holdings of 4,355 shares of Common Stock. The filing also lists several restricted stock unit (RSU) awards, each representing a contingent right to receive one share of Otter Tail stock.

One RSU grant relates to 600 underlying Common Stock shares that became exercisable on April 8, 2023, and another relates to 1,400 underlying shares tied to a April 8, 2024 date. Two additional RSU awards each cover 550 underlying shares with dates of April 8, 2024 and April 8, 2025.

Footnotes state that total direct holdings include shares acquired through the Employee Stock Purchase Plan and from restricted stock unit distributions, and that RSUs vest four years from the date shown, with each unit representing a contingent right to receive one share of Otter Tail Corporation stock.

Insider Trade Summary

5 transactions reported

Mixed 5 txns

Insider Nelson Tyler J

Role VP, Chief Financial Officer

Type	Security	Shares	Price	Value
holding	Restricted Stock Units	--	--	--
holding	Restricted Stock Units	--	--	--
holding	Restricted Stock Units	--	--	--
holding	Restricted Stock Units	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Restricted Stock Units — 3,100 contracts (Direct); Common Stock — 4,355 shares (Direct)

Footnotes (3)

1. F1. Total direct holdings include shares acquired through the Employee Stock Purchase Plan and shares acquired pursuant to restricted stock unit distributions.
2. F2. Restricted stock units vest four years from date shown above
3. F3. Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation stock

Key Figures

Direct common stock holdings: 4,355 shares RSU underlying shares (2023 grant): 600 shares RSU underlying shares (2024 grant): 1,400 shares +3 more

6 metrics

Direct common stock holdings 4,355 shares Total direct Common Stock after reported holdings

RSU underlying shares (2023 grant) 600 shares Restricted stock units tied to April 8, 2023 date

RSU underlying shares (2024 grant) 1,400 shares Restricted stock units tied to April 8, 2024 date

RSU underlying shares (2024 grant 2) 550 shares Additional RSUs tied to April 8, 2024 date

RSU underlying shares (2025 grant) 550 shares Restricted stock units tied to April 8, 2025 date

RSU exercise price $0.00 per unit Conversion or exercise price for all RSU awards

Key Terms

Restricted stock units, Employee Stock Purchase Plan, contingent right, Common Stock

4 terms

Restricted stock units financial

"The filing also lists several restricted stock unit (RSU) awards"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Employee Stock Purchase Plan financial

"Total direct holdings include shares acquired through the Employee Stock Purchase Plan"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

contingent right financial

"Each restricted stock unit represents a contingent right to receive one share"

Common Stock financial

"direct holdings of 4,355 shares of Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does Otter Tail Corp (OTTR) CFO Nelson Tyler J report on this Form 3?

The Form 3 shows Otter Tail Corp CFO Nelson Tyler J directly holds 4,355 shares of Common Stock. It also lists multiple restricted stock unit awards that provide contingent rights to receive additional Otter Tail shares over time as they vest.

How many Otter Tail Corp (OTTR) common shares does the CFO directly own?

The CFO directly owns 4,355 shares of Otter Tail Corp Common Stock according to the Form 3. Footnotes explain this total includes shares acquired through the Employee Stock Purchase Plan and from prior restricted stock unit distributions.

What restricted stock units are reported for the Otter Tail Corp (OTTR) CFO?

The filing lists several restricted stock unit awards, including one tied to 600 underlying shares and another tied to 1,400 underlying shares. Two additional RSU grants each relate to 550 underlying shares, all representing contingent rights to receive Otter Tail stock.

When do the Otter Tail Corp (OTTR) restricted stock units for the CFO vest?

Footnotes state that restricted stock units vest four years from the date shown for each award. The reported RSUs reference dates of April 8, 2023, April 8, 2024, and April 8, 2025, which determine each grant’s four-year vesting schedule.

What does each restricted stock unit represent for Otter Tail Corp (OTTR) shares?

Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation stock. This means the CFO gains one share for each unit as it vests, subject to the four-year vesting terms described in the filing’s footnotes.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/14/2026 - 05:06 PM Learn about SEC filing dates

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Nelson Tyler J

(Last) (First) (Middle)

215 SOUTH CASCADE STREET

(Street)

FERGUS FALLS MINNESOTA 56537

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
04/13/2026

3. Issuer Name and Ticker or Trading Symbol
Otter Tail Corp [ OTTR ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP, Chief Financial Officer

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	4,355(1)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	04/08/2023(2)	(2)	Common Stock	600	(3)	D
Restricted Stock Units	04/08/2024(2)	(2)	Common Stock	1,400	(3)	D
Restricted Stock Units	04/08/2024(2)	(2)	Common Stock	550	(3)	D
Restricted Stock Units	04/08/2025(2)	(2)	Common Stock	550	(3)	D

Explanation of Responses:

1. Total direct holdings include shares acquired through the Employee Stock Purchase Plan and shares acquired pursuant to restricted stock unit distributions.

2. Restricted stock units vest four years from date shown above

3. Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation stock

Remarks:

	/s/ Tyler J. Nelson by James A VerSteeg, Attorney-in-Fact	04/14/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)