Key facts
- This page summarizes GC Investments LLC's Form 4 filing for Altair Engineering Inc. (ALTR).
- 2 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 26 Mar 2025, 16:25.
GC Investments LLC - 26 Mar 2025 Form 4 Insider Report for Altair Engineering Inc. (ALTR)
- Reporting relationship
- 10%+ Owner
- Issuer ticker
- ALTR
- Reported as of
- 26 Mar 2025
- Net transaction value
- -$490,872,452
- SEC form
- 4
- Accepted by SEC
- 26 Mar 2025, 16:25:25 UTC
- Prior SEC filing
- 15 Oct 2024
- Source filing
- View source filing
- Reporting owner signature
- /s/ Raoul Matira, attorney-in-fact for GC Investments, LLC
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
GC Investments LLC filed Form 4 for Altair Engineering Inc. (ALTR) on 26 Mar 2025.
Change
- Previous filing in this sequence was filed on 15 Oct 2024.
- Current net transaction value: -$490,872,452.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
ALTR
transaction
Class A Common Stock
Disposed to Issuer
- Transaction value
- $33,900,000
- Shares
- -300,000
- Change %
- -100%
- Price
- $113.00
- Shares after
- 0
- Date
- 26 Mar 2025
- Ownership
- Direct
- Footnotes
- F1, F2
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
ALTR
transaction
Derivative
Class B Common Stock
Disposed to Issuer
- Transaction value
- $456,972,452
- Shares
- -4,044,004
- Change %
- -100%
- Price
- $113.00
- Shares after
- 0
- Date
- 26 Mar 2025
- Ownership
- Direct
- Underlying class
- Class A Common Stock
- Underlying amount
- 4,044,004
- Exercise price
- $0.000000
- Footnotes
- F1, F3, F4
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Section 16 status
GC Investments LLC is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.
Explanation of responses 4 footnotes
Footnote F1
On March 26, 2025, the Company was acquired by Siemens Industry Software Inc. ("Siemens") pursuant to the merger agreement entered into among the Company, Siemens, and Astra Merger Sub Inc., dated as of October 30, 2024.
Footnote F2
Upon the consummation of the merger, each issued and outstanding share of the Company's Class A Common Stock was canceled and converted into the right receive $113.00 in cash without interest.
Footnote F3
Upon the consummation of the merger, each issued and outstanding share of the Company's Class B Common Stock was canceled and converted into the right receive $113.00 in cash without interest.
Footnote F4
Each share of the Company's Class B Common Stock was immediately convertible, at the option of the shareholder, into one share of Class A Common Stock and automatically convertible into Class A Common Stock upon the occurrence of certain events.