[Form 4] APOGEE ENTERPRISES, INC. Insider Trading Activity

Rhea-AI Filing Summary

Apogee Enterprises EVP and CFO Mark Richard Augdahl reported routine equity compensation activity. On April 22, 2026, he received two awards of common stock totaling 12,535 shares at a reference price of $35.47 per share, classified as grants or awards.

On the same date, 428 shares were disposed of in a tax-withholding transaction at $35.47 per share to cover tax obligations, not an open-market sale. Following these transactions, he directly holds 44,886 shares of common stock. Footnotes state that the granted shares vest over three years in equal installments on April 30, 2027, April 30, 2028, and April 30, 2029, and include restricted stock under the company’s 2019 Stock Incentive Plan.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider Augdahl Mark Richard

Role EVP, Chief Financial Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	11,630	$35.47	$413K
Grant/Award	Common Stock	905	$35.47	$32K
Tax Withholding	Common Stock	428	$35.47	$15K

Holdings After Transaction: Common Stock — 43,981 shares (Direct, null)

Footnotes (1)

1. Shares vest over a three-year vesting period with one-third of the shares vesting on 4/30/27, 4/30/28 and 4/30/29. Includes shares of restricted stock granted under the 2019 Stock Incentive Plan.

Key Figures

Awarded shares (large grant): 11,630 shares Awarded shares (additional grant): 905 shares Tax-withheld shares: 428 shares +3 more

6 metrics

Awarded shares (large grant) 11,630 shares Common stock grant on April 22, 2026 at $35.47

Awarded shares (additional grant) 905 shares Common stock grant on April 22, 2026 at $35.47

Tax-withheld shares 428 shares Tax-withholding disposition on April 22, 2026 at $35.47

Post-transaction holdings 44,886 shares Common stock directly held after reported transactions

Vesting schedule 1/3 each year Vests on April 30, 2027, 2028, and 2029

Reference price $35.47 per share Price used for grants and tax-withholding disposition

Key Terms

tax-withholding disposition, restricted stock, vesting period, 2019 Stock Incentive Plan

4 terms

tax-withholding disposition financial

"428 shares were disposed of in a tax-withholding transaction at $35.47 per share"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

restricted stock financial

"Includes shares of restricted stock granted under the 2019 Stock Incentive Plan"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

vesting period financial

"Shares vest over a three-year vesting period with one-third of the shares vesting"

A vesting period is the set amount of time someone must wait before they fully own granted shares, stock options, or other equity tied to their work or an agreement; ownership increases gradually or in steps during that time. Investors care because vesting determines when insiders or employees can sell shares, which affects future supply of stock, company incentives and executive retention—think of it like unlocking ownership over installments rather than receiving it all at once.

2019 Stock Incentive Plan financial

"Includes shares of restricted stock granted under the 2019 Stock Incentive Plan"

Form 4 Insider Transactions: What Each Field Means →

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).

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^*

Augdahl Mark Richard

(Last) (First) (Middle)

4400 WEST 78TH STREET

SUITE 520

(Street)

BLOOMINGTON MINNESOTA 55435

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
APOGEE ENTERPRISES, INC. [ APOG ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/22/2026

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

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

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

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	04/22/2026		A		11,630(1)	A	$35.47	43,981(2)	D
Common Stock	04/22/2026		A		905	A	$35.47	44,886	D
Common Stock	04/22/2026		F		428	D	$35.47	44,458	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. Shares vest over a three-year vesting period with one-third of the shares vesting on 4/30/27, 4/30/28 and 4/30/29.

2. Includes shares of restricted stock granted under the 2019 Stock Incentive Plan.

Remarks:

	/s/Bryan A. Welp, Attorney-in-Fact for Mark R. Augdahl	04/24/2026
	** 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.
* Form 4: SEC 1474 (03-26)