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SEC Form 4 research

Altair Engineering Inc. insider transactions

Inspect Altair Engineering Inc.'s public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0001701732
Reporting owners
39
Officers and directors
24
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

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Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Show the table · 26 rows, 3 columns

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Brown Matthew Charles000176697915
Ayyar Shekar G00012979011
Buckner Stephanie00018396909
Chouinard Brett R000172068637
Gayle Brian000185136318
Messano Amy000176286324
Kunju Ravi000194959313
Scapa James Ralph0001720314386
Dias Nelson000172064232
Harris Teresa A000172031716
Brancheau James E00017206891
Brennan Jeffrey M00017208041
Dagg James000172066531
Fariello Massimo Giuseppe00017206441
Hart Richard000163556344
Kowal Jan00017206642
Maitra Raoul000180246824
Marraccini Jeffrey000191293523
Morof Howard N000172031534
Nichols Martin E00017206459
Perring Tom Mark00017203001
Saravia Gilma000180509614
Schramm Uwe000172031233
Simon David L000176373811
Siudara Andrea00017884691
Srikanth Mahalingam000172044117
Brown Matthew Charles ↗Ayyar Shekar G ↗Buckner Stephanie ↗Chouinard Brett R ↗Gayle Brian ↗Messano Amy ↗Kunju Ravi ↗Scapa James Ralph ↗Dias Nelson ↗Harris Teresa A ↗Brancheau James E ↗Brennan Jeffrey M ↗Dagg James ↗Fariello Massimo Giuseppe ↗Hart Richard ↗Kowal Jan ↗Maitra Raoul ↗Marraccini Jeffrey ↗Morof Howard N ↗Nichols Martin E ↗Perring Tom Mark ↗Saravia Gilma ↗Schramm Uwe ↗Simon David L ↗Siudara Andrea ↗Srikanth Mahalingam ↗

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.