Altair Engineering Inc.

ALTR

Altair Engineering Inc. (ALTR) has 10 disclosed filings on Paydirt over the past 24 months from 7 corporate insiders: 0 purchases and 10 sales. Filers took a median of 2 days from execution to disclosure, and the most recent trade was executed Mar 17 2025 and filed Mar 19 2025. The most active filer was Matthew Charles Brown with 2 filings. Data as of Nov 8 2026.

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Filings, 24m

0 buys · 10 sells

Traders, 24m

7 insiders

Volume, 24miDollar value disclosed in the window

$8.0M

estimated for Congress, as filed for insiders

Median delay

execution to disclosure

Last traded

Mar 17 2025

Filed Mar 19 2025

ADViAverage daily dollar volume

–

not on file

No price series on file for ALTR yet.

Volume by month

Buys $0 Sells $8.0M

Estimated for Congress, as filed for insiders · by filing month · past 24 months

Who filed · past 24 months

MB Matthew Charles Brown Chief Financial Officer 2 filings · 0 buys, 2 sales ND Nelson Dias Chief Revenue Officer 2 filings · 0 buys, 2 sales JS James Ralph Scapa Chief Executive Officer 2 filings · 0 buys, 2 sales TH Teresa A Harris Director 1 filing · 0 buys, 1 sale JL JRS Investments LLC 10% owner 1 filing · 0 buys, 1 sale JT James R. Scapa Declaration of Trust 10% owner 1 filing · 0 buys, 1 sale MS Mahalingam Srikanth Chief Technology Officer 1 filing · 0 buys, 1 sale

Recent filings

Nelson DiasSALE Chief Revenue Officer $186K
1,671 sh × $111.30
Exec Mar 17 2025
Filed Mar 19 2025 · 5:30 PM ET Teresa A HarrisSALE Director $301K
2,700 sh × $111.61
Exec Feb 25 2025
Filed Feb 27 2025 · 5:30 PM ET Matthew Charles BrownSALE Chief Financial Officer $425K
3,811 sh × $111.53
Exec Feb 26 2025
Filed Feb 27 2025 · 5:30 PM ET Matthew Charles BrownSALE Chief Financial Officer $114K
1,048 sh × $108.90
Exec Dec 23 2024
Filed Dec 26 2024 · 5:30 PM ET Nelson DiasSALE Chief Revenue Officer $2.4M
22,500 sh × $106.23
Exec Dec 10 2024
Filed Dec 11 2024 · 5:30 PM ET James Ralph ScapaSALE Chief Executive Officer $1.7M
16,095 sh × $105.65
Exec Dec 3 2024
Filed Dec 5 2024 · 5:30 PM ET Mahalingam SrikanthSALE Chief Technology Officer $137K
1,298 sh × $105.65
Exec Dec 3 2024
Filed Dec 5 2024 · 5:30 PM ET James R. Scapa Declaration of TrustSALE 10% owner $687K
6,500 sh × $105.69
Exec Nov 29 2024
Filed Dec 2 2024 · 5:30 PM ET JRS Investments LLCSALE 10% owner $687K
6,500 sh × $105.69
Exec Nov 29 2024
Filed Dec 2 2024 · 5:30 PM ET James Ralph ScapaSALE Chief Executive Officer $1.4M
13,000 sh across 2 lots
Exec Nov 29 2024
Filed Dec 2 2024 · 5:30 PM ET Jeffrey MarracciniSALE See Remarks $190K
1,824 sh × $104.10
Exec Nov 5 2024
Filed Nov 7 2024 · 5:30 PM ET James R. Scapa Declaration of TrustSALE 10% owner $636K
6,205 sh across 2 lots
Exec Oct 28 2024
Filed Oct 29 2024 · 5:30 PM ET JRS Investments LLCSALE 10% owner $636K
6,204 sh across 2 lots
Exec Oct 28 2024
Filed Oct 29 2024 · 5:30 PM ET James Ralph ScapaSALE Chief Executive Officer $1.3M
12,409 sh across 4 lots
Exec Oct 28 2024
Filed Oct 29 2024 · 5:30 PM ET George J ChristSALE 10% owner $10.7M
100,000 sh across 7 lots
Exec Oct 23 2024
Filed Oct 25 2024 · 5:30 PM ET Christ Revocable TrustSALE 10% owner $10.7M
100,000 sh across 7 lots
Exec Oct 23 2024
Filed Oct 25 2024 · 5:30 PM ET