Summary
Updated Aug 31, 2026
Jonathan A. Seiffer files SEC Form 4 reports at Mister Car Wash, Inc. (MCW). 3 SEC Form 4 filings on record going back to 2024, most recently on 19 May 2026. Lifetime open-market sales: $20.31M.
Recent Transactions
1Every recent SEC Form 4 transaction Jonathan A. Seiffer has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Jonathan A. Seiffer files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Brian A. Tilzer - $623K of SIG open-market activity in the last 12 months
- John Lo-Minn Lai - $156K of MCW open-market activity in the last 12 months
- Jedidiah Marc Gold - $34K of MCW open-market activity in the last 12 months
- Joseph Duane Matheny - $16K of MCW open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Jonathan A. Seiffer?
Jonathan A. Seiffer is a corporate insider of Mister Car Wash, Inc. (MCW). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Jonathan A. Seiffer last file a Form 4?
The most recent primary Form 4 on record is dated 19 May 2026, one of 3 filings going back to 2024.
Has Jonathan A. Seiffer been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($20.31M) across all tracked filings.
Where can I see all of Jonathan A. Seiffer'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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