AdvanSix (ASIX) CEO withholds 33,642 shares to cover tax obligations

Rhea-AI Filing Summary

AdvanSix Inc. Chief Executive Officer Erin N. Kane reported a tax-related share disposition. On February 28, 2026, 33,642 shares of common stock were withheld at $17.47 per share to satisfy tax withholding obligations on Restricted Stock Units that vested that day. After this withholding, Kane directly owned 623,103 common shares.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Kane Erin N

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock, par value $0.01	33,642	$17.47	$588K

Holdings After Transaction: Common Stock, par value $0.01 — 623,103 shares (Direct)

Footnotes (1)

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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^*

Kane Erin N

(Last) (First) (Middle)

300 KIMBALL DRIVE, SUITE 101

(Street)

PARSIPPANY NJ 07054

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
AdvanSix Inc. [ ASIX ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
02/28/2026

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, par value $0.01	02/28/2026		F		33,642(1)	D	$17.47	623,103	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 withheld to satisfy tax withholding obligations related to Restricted Stock Units that vested on February 28, 2026.

Remarks:

	/s/ Achilles B. Kintiroglou for Erin N. Kane	03/03/2026
	** 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.

FAQ

What insider transaction did AdvanSix (ASIX) report for CEO Erin Kane?

AdvanSix reported a tax-withholding disposition by CEO Erin N. Kane. On February 28, 2026, 33,642 common shares were withheld to cover tax obligations tied to Restricted Stock Units that vested, leaving her with 623,103 directly owned shares afterward.

Was the AdvanSix (ASIX) CEO’s Form 4 transaction an open-market stock sale?

No, the transaction was not an open-market sale. The filing shows a Form 4 code F tax-withholding disposition, where 33,642 shares were withheld to satisfy tax liabilities arising from vesting Restricted Stock Units on February 28, 2026.

How many AdvanSix (ASIX) shares were withheld for the CEO’s taxes?

The company withheld 33,642 AdvanSix common shares for tax purposes. These shares covered the CEO’s tax withholding obligations related to Restricted Stock Units that vested on February 28, 2026, rather than being sold in the open market.

What price per share was used in the AdvanSix (ASIX) tax-withholding transaction?

The tax-withholding disposition used a price of $17.47 per AdvanSix common share. This price applied to the 33,642 shares withheld to satisfy the CEO’s tax obligations when her Restricted Stock Units vested on February 28, 2026.

How many AdvanSix (ASIX) shares does CEO Erin Kane hold after this Form 4 transaction?

After the tax-withholding disposition, CEO Erin N. Kane directly owns 623,103 AdvanSix common shares. This figure reflects her holdings following the withholding of 33,642 shares to meet tax obligations on vested Restricted Stock Units.

What is the reason given for the AdvanSix (ASIX) CEO share disposition?

The reason given is tax withholding on equity compensation. The filing states the 33,642 shares were withheld to satisfy tax withholding obligations arising from Restricted Stock Units that vested on February 28, 2026, rather than discretionary selling.