Robert M. Buck is President & COO at TopBuild Corp (BLD). They have made 27 open-market trades across 1 company since 2017, most recently 2026-06-23.
CIK 0001644960
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 27 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| BLD | 67,519 | $23.9M |
| CNM | 15,849 | $666K |
| Total | $24.5M |
Shares reported on the most recent Form 4, priced at the 2026-06-24 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 |
|---|---|---|---|---|---|---|---|---|
| BLD | SELL | 2025-12-11 | 2025-12-12 | $453.39 | $2.3M | -2.5% | +8.0% | -16.9% |
| BLD | SELL | 2025-11-07 | 2025-11-10 | $418.01 | $2.1M | -6.3% | +1.3% | +20.1% |
| BLD | SELL | 2025-08-07 | 2025-08-08 | $415.19 | $6.1M | +1.3% | +4.5% | -2.3% |
| BLD | SELL | 2024-06-12 | 2024-06-13 | $418.05 | $1.0M | -8.0% | +5.7% | -12.0% |
| BLD | SELL | 2024-05-09 | 2024-05-10 | $403.72 | $4.0M | -3.1% | -2.9% | -10.0% |
| BLD | SELL | 2023-12-15 | 2023-12-18 | $374.60 | $937K | +0.6% | -2.1% | +9.5% |
| BLD | SELL | 2023-11-29 | 2023-11-30 | $296.02 | $1.3M | +9.5% | +25.4% | +33.0% |
| BLD | SELL | 2023-08-14 | 2023-08-14 | $301.76 | $1.4M | -5.8% | -10.9% | -10.6% |
| BLD | SELL | 2023-06-13 | 2023-06-15 | $240.04 | $2.1M | +5.5% | +13.4% | +9.0% |
| BLD | SELL | 2021-12-15 | 2021-12-16 | $273.33 | $547K | +2.8% | -14.7% | -18.8% |
| BLD | SELL | 2021-11-05 | 2021-11-08 | $264.46 | $1.1M | +4.0% | +5.9% | -12.8% |
| BLD | SELL | 2020-09-01 | 2020-09-02 | $159.69 | $319K | -4.1% | +11.0% | +6.8% |
| BLD | SELL | 2020-08-07 | 2020-08-10 | $139.58 | $3.3M | +5.6% | +5.0% | +5.3% |
| BLD | SELL | 2020-05-08 | 2020-05-11 | $100.03 | $300K | +12.5% | +34.2% | +55.3% |
| BLD | SELL | 2020-02-27 | 2020-03-02 | $104.58 | $2.8M | -28.5% | -40.4% | +12.3% |
| BLD | SELL | 2019-11-04 | 2020-01-03 | $109.94 | $911K | +5.7% | +9.8% | -37.0% |
| BLD | SELL | 2019-11-04 | 2019-11-06 | $109.14 | $306K | -0.6% | -0.2% | +2.2% |
| BLD | SELL | 2019-08-06 | 2019-08-07 | $90.42 | $163K | +1.5% | +0.4% | +16.9% |
| BLD | SELL | 2019-08-05 | 2019-08-07 | $87.38 | $333K | +1.5% | +0.4% | +16.9% |
| BLD | SELL | 2019-08-05 | 2019-08-07 | $88.14 | $937K | +1.5% | +0.4% | +16.9% |
| BLD | SELL | 2019-05-16 | 2019-05-17 | $85.00 | $298K | -4.6% | -3.2% | +9.4% |
| BLD | SELL | 2019-05-09 | 2019-05-13 | $81.44 | $672K | -7.4% | -4.7% | +5.4% |
| BLD | SELL | 2019-02-28 | 2019-03-04 | $58.57 | $1.1M | +3.0% | +5.3% | +29.7% |
| BLD | SELL | 2018-08-09 | 2018-08-13 | $77.34 | $1.7M | -3.9% | -10.8% | -30.4% |
| BLD | SELL | 2018-03-06 | 2018-03-08 | $74.12 | $1.7M | +5.6% | +1.8% | +11.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.