# EDGAR Filing Document

**Accession Number:** 0001701732
**File Stem:** 0001127602-23-001770
**Filing Date:** 2023-1
**Character Count:** 9099
**Document Hash:** 5bcf02a7f691c5631c12e188c0e0a2cf
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001127602-23-001770.hdr.sgml**: 20230119

**ACCESSION NUMBER**: 0001127602-23-001770

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230117

**FILED AS OF DATE**: 20230119

**DATE AS OF CHANGE**: 20230119

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Scapa James Ralph
- **CENTRAL INDEX KEY:** 0001720314

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38263
- **FILM NUMBER:** 23537105

**MAIL ADDRESS:**
- **STREET 1:** 1820 E BIG BEAVER RD
- **CITY:** TROY
- **STATE:** MI
- **ZIP:** 48083
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Altair Engineering Inc.
- **CENTRAL INDEX KEY:** 0001701732
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-PREPACKAGED SOFTWARE [7372]
- **IRS NUMBER:** 382591828
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 1820 E. BIG BEAVER ROAD
- **CITY:** TROY
- **STATE:** MI
- **ZIP:** 48083
- **BUSINESS PHONE:** 248-614-2400

**MAIL ADDRESS:**
- **STREET 1:** 1820 E. BIG BEAVER ROAD
- **CITY:** TROY
- **STATE:** MI
- **ZIP:** 48083

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Altair Engineering Ing.
- **DATE OF NAME CHANGE:** 20170322

### 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>Scapa James Ralph<br><sub>(Last) (First) (Middle)</sub><br>C/O ALTAIR ENGINEERING INC.<br>1820 E. BIG BEAVER RD.<br><sub>(Street)</sub><br>TROY, MI 48083<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-01-17 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [X] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Executive Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Altair Engineering Inc. [ ALTR ] | **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 | 2023-01-17 |  | C |  | 20000 | A | $0 | 20000 | I | By James R. Scapa Declaration of Trust dated March 5, 1987<sup>(1)</sup> |
| Class A Common Stock | 2023-01-17 |  | S<sup>(2)</sup> |  | 20000<sup>(2)</sup> | D | 49.905<sup>(3)</sup> | 0 | I | By James R. Scapa Declaration of Trust dated March 5, 1987<sup>(1)</sup> |
| Class A Common Stock | 2023-01-17 |  | C |  | 15000 | A | $0 | 15000 | I | By JRS Investments LLC<sup>(4)</sup> |
| Class A Common Stock | 2023-01-17 |  | S<sup>(2)</sup> |  | 15000<sup>(2)</sup> | D | 49.905<sup>(5)</sup> | 0 | I | By JRS Investments LLC<sup>(4)</sup> |
| Class A Common Stock |  |  |  |  |  |  |  | 83962<sup>(6)</sup> | D |  |
| Class A Common Stock |  |  |  |  |  |  |  | 1495<sup>(7)</sup> | I | By wife |

---

## 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 |
| Class B Common Stock | $0 | 2023-01-17 |  | C |  |  | 20000 | <sup>(8)</sup> | <sup>(8)</sup> | Class A Common Stock | 20000 | $0 | 10386610 | I | By James R. Scapa Declaration of Trust dated March 5, 1987<sup>(1)</sup> |
| Class B Common Stock | $0 | 2023-01-17 |  | C |  |  | 15000 | <sup>(8)</sup> | <sup>(8)</sup> | Class A Common Stock | 15000 | $0 | 6762182 | I | By JRS Investments LLC<sup>(4)</sup> |

---

### Footnotes:

(1) Reporting person serves as Trustee. Reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

(2) The sale of the shares of Class A Common Stock were made pursuant to a plan intended to comply with Rule 10b5-1 of the Exchange Act, previously entered into on March 2, 2022 and as modified on November 25, 2022.

(3) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.65 to $50.14 per share, inclusive. The reporting person undertakes to provide to Altair Engineering
Inc., any security holder of Altair Engineering Inc., 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 ranges set forth herein.

(4) Reporting person serves as Manager. Reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

(5) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.65 to $50.14 per share, inclusive. The reporting person undertakes to provide to Altair Engineering
Inc., any security holder of Altair Engineering Inc., 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 ranges set forth herein.

(6) Includes 55,390 Class A Common Stock restricted stock units that are unvested.

(7) Includes 752 Class A Common Stock restricted stock units that are unvested.

(8) Each share of Class B common stock is immediately convertible, at the option of the shareholder, into one share of Class A common stock and shall automatically convert into Class A common stock upon the occurrence of certain events. Please see Altair Engineering Inc. Registration Statement filed with the Securities and Exchange Commission on Form S-1 (File No. 333-220710) for a description of the conversion rights.

**Signature:** /s/ Raoul Maitra, attorney-in-fact for James R. Scapa  
**Date:** 2023-01-19

### 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.**