Thomas Anthony Shea is CEO & President at OneStream, Inc. (OS). They have made 1 open-market trade across 1 company since 2025, most recently 2026-03-10.
CIK 0002027929
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| OS | 459,986 | $11.0M |
Shares reported on the most recent Form 4, priced at the 2026-03-12 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| OS | SELL | 2025-06-11 | 2025-06-12 | $28.23 | $560K | -5.4% | -8.8% | -31.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.