Thomas A. Szlosek holds the role of EVP & CFO at AUTONATION, INC. (AN). Szlosek's filing history also covers RXO, Inc. (RXO) and Seagate Technology Holdings plc (STX). Szlosek has reported 10 insider filings with the SEC since 2025. The most recent filing was in August 2026.
Every role Thomas A. Szlosek has reported on a Form 4, reconstructed from the filings themselves. Reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
AUTONATION, INC. (AN)1 filingUpdated Aug 30, 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.
Every recent SEC Form 4 transaction Thomas A. Szlosek has reported, most recent first.
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 |
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.
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.
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
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.
1 primary Form 4 filing in the last 90 days, covering 1 company.
Recorded transactions: 3 open-market purchases ($501K) and 0 open-market sales across all tracked filings.
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.
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.
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial
$AN AUTONATION, INC.1.6K shares @ $195.16$314K
| +13.05% |