[Form 4] AdvanSix Inc. Insider Trading Activity

Rhea-AI Filing Summary

AdvanSix Inc. (ASIX) insider sale reported on Form 4. Achilles B. Kintiroglou, SVP and General Counsel, sold 571 shares of AdvanSix common stock on 09/02/2025 at $21.20 per share. After the sale, the reporting person beneficially owned 30,842 shares. The filing notes the sale was executed under a Rule 10b5-1 trading plan adopted by the reporting person on 11/12/2024, and the Form 4 was signed on 09/03/2025. The disclosure shows a routine, pre-arranged disposition by an officer with a clear compliance disclosure.

Positive

• Sale executed under a Rule 10b5-1 trading plan, indicating pre-arranged compliance measures
• Timely Form 4 disclosure with signature on 09/03/2025, demonstrating governance and reporting adherence
• Limited size of disposition (571 shares) relative to remaining beneficial ownership (30,842 shares)

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Routine, pre-arranged officer sale executed under a 10b5-1 plan; shows adherence to insider trading policy.

The transaction is a sale of 571 shares at $21.20 under a Rule 10b5-1 trading plan adopted 11/12/2024. Using a 10b5-1 plan typically indicates the officer took steps to establish an affirmative defense to insider trading claims and the timely Form 4 filing reflects expected governance compliance. The remaining beneficial ownership is 30,842 shares, and there is no indication of additional derivative activity reported.

Securities Analyst

TL;DR: Small insider sale relative to total holdings; unlikely to be material to valuation or signal company-level change.

The disposition of 571 shares at $21.20 represents a limited reduction in the reporting person’s stake (remaining 30,842 shares). Because the filing specifies the sale was pursuant to a pre-established 10b5-1 plan and shows a prompt reporting timeline, this appears to be a routine liquidity event rather than a transaction driven by undisclosed material information. No options, warrants, or other derivative transactions were disclosed on this Form 4.

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^*

Kintiroglou Achilles B.

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, General Counsel

3. Date of Earliest Transaction (Month/Day/Year)
09/02/2025

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	09/02/2025		S		571(1)	D	$21.2	30,842	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 sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 12, 2024.

Remarks:

	/s/ Achilles B. Kintiroglou	09/03/2025
	** 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 did AdvanSix insider Achilles Kintiroglou sell on 09/02/2025 (ASIX)?

The reporting person sold 571 shares of AdvanSix common stock at $21.20 per share on 09/02/2025.

How many AdvanSix shares does the insider own after the reported sale (ASIX)?

Following the transaction the reporting person beneficially owned 30,842 shares of AdvanSix common stock.

Was the sale part of a pre-arranged trading plan for ASIX insiders?

Yes. The Form 4 states the sale was effected pursuant to a Rule 10b5-1 trading plan adopted on 11/12/2024.

When was the Form 4 signed for the ASIX insider sale?

The Form 4 was signed by Achilles B. Kintiroglou on 09/03/2025.

Does this Form 4 report any derivative transactions for ASIX?

No. Table II for derivative securities shows no derivatives reported on this Form 4.