Douglas Dynamics controller sells 977 company shares

Douglas Dynamics, Inc. Controller Jon J. Sisulak reported an open-market sale of 977 shares of common stock on March 9, 2026, at an average price of $42.6065 per share.

Accepted by SEC EDGAR 03/11/2026 - 05:42 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Douglas Dynamics, Inc. Controller Jon J. Sisulak reported an open-market sale of 977 shares of common stock on March 9, 2026, at an average price of $42.6065 per share. After this transaction, he directly holds 14,232 shares.

The filing notes that the sale was carried out under a pre-arranged Rule 10b5-1 trading plan adopted on November 11, 2022, indicating it was scheduled in advance rather than timed discretionarily.

Insider Trade Summary 10b5-1

Net Seller: 977 shares

Net Sell 1 txn

Insider Sisulak Jon J

Role Controller

Sold 977 shs ($42K)

Share of Position Sold 6.4%

Type	Security	Shares	Price	Value
Sale	Common Stock	977	$42.6065	$42K

Holdings After Transaction: Common Stock — 14,232 shares (Direct)

Holdings Before and After: Common Stock, 15,209 to 14,232 shares (Direct)

Other Insiders: 1 other insider reported open-market sales of this stock in the 30 days up to this filing.

Footnotes (1)

1. F1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 11, 2022.

FAQ

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

What insider transaction did Douglas Dynamics (PLOW) report for Jon J. Sisulak?

Douglas Dynamics reported that Controller Jon J. Sisulak sold 977 shares of common stock in an open-market transaction. The sale occurred on March 9, 2026, and was executed under a pre-arranged Rule 10b5-1 trading plan adopted in November 2022.

At what price did Jon J. Sisulak sell Douglas Dynamics (PLOW) shares?

Jon J. Sisulak sold his 977 Douglas Dynamics shares at an average price of $42.6065 per share. This was an open-market transaction, meaning the shares were sold on the public market at prevailing prices on the trade date.

How many Douglas Dynamics (PLOW) shares does Jon J. Sisulak hold after the sale?

After the reported sale, Jon J. Sisulak directly holds 14,232 shares of Douglas Dynamics common stock. This indicates that the 977 shares sold represent a relatively small portion of his total reported direct ownership position in the company.

Was the Douglas Dynamics (PLOW) insider sale made under a Rule 10b5-1 plan?

Yes. The filing states that the sales were effected under a Rule 10b5-1 trading plan adopted by Jon J. Sisulak on November 11, 2022. Such plans pre-schedule trades, helping separate routine portfolio management from discretionary market-timing decisions.

What role does Jon J. Sisulak hold at Douglas Dynamics (PLOW)?

Jon J. Sisulak is identified in the filing as an officer of Douglas Dynamics, serving in the role of Controller. This position typically oversees accounting and financial reporting functions, making his equity transactions relevant for investors tracking insider activity.

Does the Form 4 for Douglas Dynamics (PLOW) show any option exercises or derivative trades?

No derivative transactions are listed in this Form 4. The filing shows only a single non-derivative transaction: an open-market sale of 977 shares of Douglas Dynamics common stock, with no accompanying option exercises or other derivative activity reported.

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

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SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Sisulak Jon J

(Last) (First) (Middle)

C/O DOUGLAS DYNAMICS, INC.

11270 W. PARK PLACE, SUITE 300

(Street)

MILWAUKEE WI 53224

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
DOUGLAS DYNAMICS, INC [ PLOW ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Controller

3. Date of Earliest Transaction (Month/Day/Year)
03/09/2026

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

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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/09/2026		S(1)		977	D	$42.6065	14,232	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 11, 2022.

	/s/ Jon J. Sisulak	03/11/2026
	** 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 4 (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.