Summary
Updated Aug 31, 2026
Thomas A. Szlosek is EVP & CFO of AUTONATION, INC. (AN). 10 SEC Form 4 filings on record going back to 2025, most recently on 10 August 2026. Most recent open-market trade: bought $251K of RXO on 12 November 2025. Lifetime open-market purchases: $501K. Historical track record: 3/5 stars across 3 tracked purchases.
Recent Transactions
15Every recent SEC Form 4 transaction Thomas A. Szlosek has reported, most recent first.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| InsiderAlpha rating | ★★★☆☆ (3/5) |
| Total purchases tracked | 3 |
| Purchases with forward-return data | 3 |
| 30-day win rate | 67% |
| 90-day win rate | 67% |
| Avg 5-day return | +5.22% |
| Avg 30-day return | +4.88% |
| Avg 90-day return | +7.70% |
| Best 30-day return | +13.05% |
Trading Pattern
InsiderAlpha's records for Thomas A. Szlosek go back to 2025: 10 primary Form 4 filings, an average of 5.0 per year. The typical open-market purchase is $167K (3 buys totaling $501K). The largest single buy on record is $251K of RXO in 2025. 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.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Thomas A. Szlosek 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.
- Kimberly Dees - $512K of AN open-market activity in the last 12 months
- Lisa Lutoff-Perlo - $198K of AN 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 Thomas A. Szlosek?
Thomas A. Szlosek is a corporate insider, tracked as EVP & CFO of AUTONATION, INC. (AN). InsiderAlpha holds 10 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Thomas A. Szlosek submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Thomas A. Szlosek been buying or selling stock?
Recorded transactions: 3 open-market purchases ($501K) and 0 open-market sales across all tracked filings.
How accurate is Thomas A. Szlosek's historical track record?
Across 3 tracked purchases, Thomas A. Szlosek averaged +4.9% avg 30-day return with a 67% 30-day win rate. InsiderAlpha rates the track record at 3/5 stars.
Where can I see all of Thomas A. Szlosek'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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