Updated Jul 16, 2026
Carter Thomas L Jr has filed 2 SEC Form 4 filings across 1 company in the last 90 days — buying. Lifetime open-market purchases: $2.91M. Historical track record: 4/5 stars across 11 tracked purchases.
Thomas L. Carter Jr. is the CEO, President, and Chairman of Black Stone Minerals, L.P., a leading oil and natural gas mineral company. He has played a significant role in managing and expanding the company's mineral and royalty asset portfolio.
| Role | Executive Chairman, Director |
|---|---|
| Notability | 50/100 |
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| InsiderAlpha rating | ★★★★☆ (4/5) |
|---|---|
| Total purchases tracked | 11 |
| Purchases with forward-return data | 11 |
| 30-day win rate | 8182% |
| 90-day win rate | 10000% |
| Avg 5-day return | +208.08% |
| Avg 30-day return | +367.30% |
| Avg 90-day return | +1420.01% |
| Best 30-day return | +1216.44% |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-14 | BSM | Black Stone Minerals, L.P. | P — Open-market purchase | 1.1K | $13.50 | $15K |
| 2026-05-12 | BSM | Black Stone Minerals, L.P. | P — Open-market purchase | 19.2K | $13.48 | $258K |
| 2026-05-12 | BSM | Black Stone Minerals, L.P. | P — Open-market purchase | 25.0K | $13.47 | $337K |
| 2026-05-12 | BSM | Black Stone Minerals, L.P. | P — Open-market purchase | 23.6K | $13.32 | $314K |
| 2026-02-26 | BSM | Black Stone Minerals, L.P. | F — Tax withholding / forfeiture | 53.6K | $15.23 | $817K |
| 2026-02-26 | BSM | Black Stone Minerals, L.P. | A — Grant or award | 136.3K | $0.00 | |
| 2026-02-06 | BSM | Black Stone Minerals, L.P. | A — Grant or award | 53.4K | $0.00 | |
| 2025-09-11 | BSM | Black Stone Minerals, L.P. | P — Open-market purchase | 14.0K | $12.59 | $176K |
| 2025-09-11 | BSM | Black Stone Minerals, L.P. | P — Open-market purchase | 1.3K | $12.39 | $16K |
| 2025-09-08 | BSM | Black Stone Minerals, L.P. | P — Open-market purchase | 10.5K | $12.32 | $130K |
| 2025-09-08 | BSM | Black Stone Minerals, L.P. | P — Open-market purchase | 1.3K | $12.07 | $16K |
| 2025-09-08 | BSM | Black Stone Minerals, L.P. | P — Open-market purchase | 13.5K | $11.90 | $161K |
| 2025-08-19 | BSM | Black Stone Minerals, L.P. | P — Open-market purchase | 21.0K | $12.03 | $253K |
| 2025-08-19 | BSM | Black Stone Minerals, L.P. | P — Open-market purchase | 20.0K | $11.97 | $239K |
| 2025-08-12 | BSM | Black Stone Minerals, L.P. | P — Open-market purchase | 9.2K | $12.36 | $114K |
| 2025-08-07 | BSM | Black Stone Minerals, L.P. | P — Open-market purchase | 25.0K | $12.10 | $303K |
| 2025-08-07 | BSM | Black Stone Minerals, L.P. | P — Open-market purchase | 27.5K | $12.20 | $336K |
| 2025-08-07 | BSM | Black Stone Minerals, L.P. | P — Open-market purchase | 19.7K | $12.24 | $241K |
Thomas L. Carter Jr. is the CEO, President, and Chairman of Black Stone Minerals, L.P., a leading oil and natural gas mineral company. He has played a significant role in managing and expanding the company's mineral and royalty asset portfolio.…
2 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 15 open-market purchases ($2.91M) and 0 open-market sales () across all tracked filings.
Across 11 tracked purchases, Carter Thomas L Jr averaged +367.3% avg 30-day return with a 8182% 30-day win rate. InsiderAlpha rates the track record at 4/5 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.
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