Summary
Updated Aug 31, 2026
SIM Sponsor 1 LLC is 10% Owner of SIM Acquisition Corp. I (SIMA). 4 SEC Form 4 filings on record going back to 2025, most recently on 13 May 2026.
Recent Transactions
1Every recent SEC Form 4 transaction SIM Sponsor 1 LLC has reported, most recent first.
Trading Pattern
InsiderAlpha's records for SIM Sponsor 1 LLC go back to 2025: 4 primary Form 4 filings, an average of 2.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Most Active Insiders Right Now
SIM Sponsor 1 LLC has no co-filers on record, so these are insiders with the largest open-market activity across the market in the last 90 days.
- Submarine Buyer LLC - $705.06M of JMKE open-market activity in the last 90 days
- CASCADE INVESTMENT, L.L.C. - $685.25M of RSG open-market activity in the last 90 days
- BDT CAPITAL PARTNERS, LLC - $589.61M of ALH open-market activity in the last 90 days
- Joseph Gebbia - $510.90M of ABNB open-market activity in the last 90 days
- Tony W. Lee - $497.40M of PRMB open-market activity in the last 90 days
- ORCP III DE TopCo GP, LLC - $497.40M of PRMB open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
What is SIM Sponsor 1 LLC?
SIM Sponsor 1 LLC is a corporate entity, tracked as 10% Owner of SIM Acquisition Corp. I (SIMA). InsiderAlpha holds 4 primary Form 4 filings for it, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did SIM Sponsor 1 LLC last file a Form 4?
The most recent primary Form 4 on record is dated 13 May 2026, one of 4 filings going back to 2025.
Where can I see all of SIM Sponsor 1 LLC's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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