Robert H. Steelhammer is Director at PROSPERITY BANCSHARES INC (PB). They have made 22 open-market trades across 1 company since 2012, most recently 2026-05-26.
CIK 0001213481
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 22 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| PB | 137,155 | $9.3M |
| PRSP | 256,400 | $7.5M |
| Total | $16.8M |
Shares reported on the most recent Form 4, priced at the 2026-05-27 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PB | SELL | 2026-05-26 | 2026-05-27 | $69.50 | $104K | +1.0% | +7.9% | +5.3% |
| PB | SELL | 2024-11-18 | 2024-11-19 | $82.73 | $301K | +2.4% | -9.4% | -3.8% |
| PB | SELL | 2023-03-06 | 2023-03-07 | $71.85 | $72K | -12.1% | -14.0% | -15.8% |
| PB | SELL | 2022-06-07 | 2022-06-07 | $72.57 | $174K | -6.4% | -4.3% | -4.4% |
| PB | SELL | 2021-06-23 | 2021-06-24 | $71.94 | $155K | -3.6% | -5.7% | -8.7% |
| PB | SELL | 2018-10-30 | 2018-10-31 | $65.44 | $285K | +4.0% | +6.5% | +9.1% |
| PB | SELL | 2018-10-26 | 2018-10-29 | $62.97 | $455K | +8.0% | +6.5% | +9.6% |
| PB | SELL | 2017-08-31 | 2017-08-31 | $60.00 | $300K | +3.0% | +10.0% | +17.9% |
| PB | SELL | 2017-08-24 | 2017-08-25 | $61.51 | $308K | -9.0% | -0.5% | +4.9% |
| PB | SELL | 2017-06-29 | 2017-06-29 | $64.35 | $515K | -1.0% | -1.6% | -1.4% |
| PB | SELL | 2017-05-24 | 2017-05-24 | $65.14 | $977K | -2.1% | -4.7% | -6.4% |
| PB | SELL | 2016-09-12 | 2016-09-12 | $54.00 | $157K | +2.8% | +3.9% | +31.0% |
| PB | SELL | 2016-02-18 | 2016-02-19 | $42.24 | $338K | +1.7% | +9.5% | +19.0% |
| PB | SELL | 2016-01-29 | 2016-02-02 | $42.17 | $295K | +3.0% | +8.9% | +27.6% |
| PB | SELL | 2015-12-18 | 2015-12-21 | $46.58 | $233K | -18.8% | -24.7% | -1.4% |
| PB | SELL | 2015-12-08 | 2015-12-09 | $51.00 | $510K | -18.8% | -9.8% | -7.0% |
| PB | SELL | 2015-09-09 | 2015-09-11 | $50.51 | $758K | -18.8% | -1.4% | -1.4% |
| PB | SELL | 2015-06-12 | 2015-06-15 | $57.09 | $1.1M | -18.8% | -1.4% | -1.4% |
| PB | SELL | 2015-03-02 | 2015-03-03 | $51.88 | $519K | -18.8% | -1.4% | -1.4% |
| PB | SELL | 2014-12-16 | 2014-12-16 | $53.02 | $848K | -18.8% | -1.4% | -1.4% |
| PB | SELL | 2014-06-05 | 2014-06-09 | $59.65 | $143K | -18.8% | -1.4% | -1.4% |
| PB | SELL | 2012-12-31 | 2013-01-02 | $41.82 | $167K | -18.8% | -1.4% | -1.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.