# EDGAR Filing Document

**Accession Number:** 0001836176
**File Stem:** 0000899243-23-008059
**Filing Date:** 2023-3
**Character Count:** 6662
**Document Hash:** f366b2bdd16336b7a5847ea571ff9400
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000899243-23-008059.hdr.sgml**: 20230310

**ACCESSION NUMBER**: 0000899243-23-008059

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230308

**FILED AS OF DATE**: 20230310

**DATE AS OF CHANGE**: 20230310

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Frost Mark T
- **CENTRAL INDEX KEY:** 0001310262

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39994
- **FILM NUMBER:** 23724063

**MAIL ADDRESS:**
- **STREET 1:** 21 CORPORATE CIRCLE
- **STREET 2:** PO BOX 15098
- **CITY:** ALBANY
- **STATE:** NY
- **ZIP:** 12033-5098
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Fathom Digital Manufacturing Corp
- **CENTRAL INDEX KEY:** 0001836176
- **STANDARD INDUSTRIAL CLASSIFICATION:** FABRICATED STRUCTURAL METAL PRODUCTS [3440]
- **IRS NUMBER:** 981571400
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 1050 WALNUT RIDGE DRIVE
- **CITY:** HARTLAND
- **STATE:** WI
- **ZIP:** 53209
- **BUSINESS PHONE:** 262-367-8254

**MAIL ADDRESS:**
- **STREET 1:** 1050 WALNUT RIDGE DRIVE
- **CITY:** HARTLAND
- **STATE:** WI
- **ZIP:** 53209

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Fathom Digital Manufacturing
- **DATE OF NAME CHANGE:** 20211223

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Altimar Acquisition Corp. II
- **DATE OF NAME CHANGE:** 20201211

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>Frost Mark T<br><sub>(Last) (First) (Middle)</sub><br>C/O FATHOM DIGITAL MANUFACTURING CORP.<br>1050 WALNUT RIDGE DRIVE<br><sub>(Street)</sub><br>HARTLAND, WI 53029<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-03-08 | **5. 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>_Chief Financial Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Fathom Digital Manufacturing Corp [ FATH ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **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

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Class A Common Stock | 2023-03-08 |  | S<sup>(1)</sup> |  | 5672 | D | 1.204<sup>(2)</sup> | 503325 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

(2) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.165 to $1.236. The Reporting Person undertakes to provide the Issuer, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

**Signature:** /s/ Ryan Martin, by James R. Brown as Attorney-in-Fact  
**Date:** 2023-03-10

### 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.**