# EDGAR Filing Document

**Accession Number:** 0001673985
**File Stem:** 0001673985-25-000109
**Filing Date:** 2025-7
**Character Count:** 6242
**Document Hash:** 0cd1a1c8e477342d16d3284a247840b7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001673985-25-000109.hdr.sgml**: 20250717

**ACCESSION NUMBER**: 0001673985-25-000109

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250709

**FILED AS OF DATE**: 20250717

**DATE AS OF CHANGE**: 20250717

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Gramm Christopher
- **CENTRAL INDEX KEY:** 0001684047

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-37774
- **FILM NUMBER:** 251131062

**MAIL ADDRESS:**
- **STREET 1:** 300 KIMBALL DRIVE, SUITE 101
- **STREET 2:** C/O LEGAL DEPT.
- **CITY:** PARSIPPANY
- **STATE:** NJ
- **ZIP:** 07054
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AdvanSix Inc.
- **CENTRAL INDEX KEY:** 0001673985
- **STANDARD INDUSTRIAL CLASSIFICATION:** PLASTICS, MATERIALS, SYNTH RESINS & NONVULCAN ELASTOMERS [2821]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 812525089
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 300 KIMBALL DRIVE
- **STREET 2:** SUITE 101
- **CITY:** PARSIPPANY
- **STATE:** NJ
- **ZIP:** 07054
- **BUSINESS PHONE:** (973) 526-1800

**MAIL ADDRESS:**
- **STREET 1:** 300 KIMBALL DRIVE
- **STREET 2:** SUITE 101
- **CITY:** PARSIPPANY
- **STATE:** NJ
- **ZIP:** 07054

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

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Gramm Christopher<br><sub>(Last) (First) (Middle)</sub><br>300 KIMBALL DRIVE, SUITE 101<br><sub>(Street)</sub><br>PARSIPPANY, NJ 07054<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>AdvanSix Inc. [ ASIX ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2025-07-09 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_VP and Interim CFO_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Common Stock, par value $0.01 | 54570<sup>(1)</sup> | D |  |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Stock Option (right to buy) | <sup>(2)</sup> | 2027-03-08 | Common Stock, par value $0.01 | 8590 | $26.66 | D |  |
| Stock Option (right to buy) | <sup>(3)</sup> | 2028-03-02 | Common Stock, par value $0.01 | 6406 | $41.97 | D |  |
| Stock Option (right to buy) | <sup>(4)</sup> | 2029-02-27 | Common Stock, par value $0.01 | 9019 | $33.34 | D |  |
| Stock Option (right to buy) | <sup>(5)</sup> | 2031-02-24 | Common Stock, par value $0.01 | 7133 | $29.21 | D |  |
| Stock Option (right to buy) | <sup>(6)</sup> | 2032-02-28 | Common Stock, par value $0.01 | 5264 | $39.15 | D |  |
| Stock Option (right to buy) | <sup>(7)</sup> | 2033-02-28 | Common Stock, par value $0.01 | 4088 | $41.20 | D |  |

---

### Footnotes:

(1) Amount includes 18,376 unvested restricted stock units granted pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated (the "Stock Plan").

(2) Grant of stock options pursuant to the Stock Plan, which vested in three equal annual installments on the first three anniversaries of the grant date of March 8, 2017.

(3) Grant of stock options pursuant to the Stock Plan, which vested in three equal annual installments on the first three anniversaries of the grant date of March 2, 2018.

(4) Grant of stock options pursuant to the Stock Plan, which vested in three equal annual installments on the first three anniversaries of the grant date of February 27, 2019.

(5) Grant of stock options pursuant to the Stock Plan, which vested in three equal annual installments on the first three anniversaries of the grant date of February 24, 2021.

(6) Grant of stock options pursuant to the Stock Plan, which vested in three equal annual installments on the first three anniversaries of the grant date of February 28, 2022.

(7) Grant of stock options pursuant to the Stock Plan, which are scheduled to vest in three equal annual installments on the first three anniversaries of the grant date of February 28, 2023.

**Signature:** /s/ Achilles B. Kintiroglou for Christopher Gramm  
**Date:** 2025-07-17

### Remarks:

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.**