← United States · Coverage record
US · SEC FORM 4
Black Stone Minerals, L.P.
BSM · NYSE · CIK 0001621434 · Energy · Oil & Gas E&P
INSIDER SIGNAL
7 qualifying P purchase groups
in the current 180-day scoring window
23 Form 4 transaction lines observed in the same window
4 sales · 12 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
Score anatomy
No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.
Why is there no score?
- No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
- Sales and other Form 4 activity remain visible as context and do not create a negative score.
Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.
Insider activity timeline
Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.
Showing the six most active owners; 3 additional owner(s) remain in Form 4 evidence.
Purchase breadth & concentration
Roles in the peak window: Director, Executive Chairman. Concentration uses priced qualifying P lines only and does not change the saved score.
SIGNAL HISTORY
Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2026-06-01 · DeWalch D Mark.
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.
Short interest
Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.
- Shares short
- 2,796,306
- Previous report
- 2,585,913
- Avg daily volume
- 343,656
- Days to cover
- 8.1
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-06-01 | DeWalch D Mark | Purchase (P) | Common units representing limited partner interests | 36,363 | USD 13.62 | USD 495,264 | SEC filing ↗ |
| 2026-05-29 | DeWalch D Mark | Purchase (P) | Common units representing limited partner interests | 36,363 | USD 13.48 | USD 490,173 | SEC filing ↗ |
| 2026-05-28 | DeWalch D Mark | Purchase (P) | Common units representing limited partner interests | 37,650 | USD 13.21 | USD 497,357 | SEC filing ↗ |
| 2026-05-13 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 1,120 | USD 13.50 | USD 15,120 | SEC filing ↗ |
| 2026-05-12 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 19,154 | USD 13.48 | USD 258,196 | SEC filing ↗ |
| 2026-05-11 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 25,000 | USD 13.47 | USD 336,750 | SEC filing ↗ |
| 2026-05-08 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 23,604 | USD 13.32 | USD 314,405 | SEC filing ↗ |
| 2025-09-12 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 14,000 | USD 12.59 | USD 176,260 | SEC filing ↗ |
| 2025-09-11 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 1,300 | USD 12.39 | USD 16,107 | SEC filing ↗ |
| 2025-09-10 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 10,536 | USD 12.32 | USD 129,804 | SEC filing ↗ |
| 2025-09-09 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 1,307 | USD 12.07 | USD 15,775 | SEC filing ↗ |
| 2025-09-08 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 13,527 | USD 11.90 | USD 160,971 | SEC filing ↗ |
| 2025-08-20 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 21,000 | USD 12.03 | USD 252,630 | SEC filing ↗ |
| 2025-08-19 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 20,000 | USD 11.97 | USD 239,400 | SEC filing ↗ |
| 2025-08-12 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 9,200 | USD 12.36 | USD 113,712 | SEC filing ↗ |
Form 4 evidence
66 transaction lines in the latest 365-day window; 396 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-10-02 | Stuart Alexander D. | Award / grant (A) | Common units representing limited partner interests | 1,658 | USD 14.32 | USD 23,743 | SEC filing ↗ |
| 2026-10-02 | Randall William E. | Award / grant (A) | Common units representing limited partner interests | 1,571 | USD 14.32 | USD 22,497 | SEC filing ↗ |
| 2026-10-02 | Kyle Jerry V. Jr. | Award / grant (A) | Common units representing limited partner interests | 1,309 | USD 14.32 | USD 18,745 | SEC filing ↗ |
Show recent Form 4 evidence (30 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-10-02 | Stuart Alexander D. | Award / grant (A) | Common units representing limited partner interests | 1,658 | USD 14.32 | USD 23,743 | SEC filing ↗ |
| 2026-10-02 | Randall William E. | Award / grant (A) | Common units representing limited partner interests | 1,571 | USD 14.32 | USD 22,497 | SEC filing ↗ |
| 2026-10-02 | Kyle Jerry V. Jr. | Award / grant (A) | Common units representing limited partner interests | 1,309 | USD 14.32 | USD 18,745 | SEC filing ↗ |
| 2026-10-02 | Hamman Anne Lenoir | Award / grant (A) | Common units representing limited partner interests | 1,309 | USD 14.32 | USD 18,745 | SEC filing ↗ |
| 2026-10-02 | DeWalch D Mark | Award / grant (A) | Common units representing limited partner interests | 1,309 | USD 14.32 | USD 18,745 | SEC filing ↗ |
| 2026-08-18 | Stuart Alexander D. | Gift (G) | Common units representing limited partner interests | 15,900 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-08-06 | Whitehead James | Sale (S) | Common units representing limited partner interests | 2,127,105 | USD 13.21 | USD 28,099,057 | SEC filing ↗ |
| 2026-07-31 | Kyle Jerry V. Jr. | J (J) | Common units representing limited partner interests | 7,665 | USD — | USD — | SEC filing ↗ |
| 2026-07-02 | Stuart Alexander D. | Award / grant (A) | Common units representing limited partner interests | 1,700 | USD 13.97 | USD 23,749 | SEC filing ↗ |
| 2026-07-02 | Randall William E. | Award / grant (A) | Common units representing limited partner interests | 1,610 | USD 13.97 | USD 22,492 | SEC filing ↗ |
| 2026-07-02 | Kyle Jerry V. Jr. | Award / grant (A) | Common units representing limited partner interests | 1,342 | USD 13.97 | USD 18,748 | SEC filing ↗ |
| 2026-07-02 | Hamman Anne Lenoir | Award / grant (A) | Common units representing limited partner interests | 1,342 | USD 13.97 | USD 18,748 | SEC filing ↗ |
| 2026-07-02 | DeWalch D Mark | Award / grant (A) | Common units representing limited partner interests | 1,342 | USD 13.97 | USD 18,748 | SEC filing ↗ |
| 2026-06-01 | DeWalch D Mark | Purchase (P) | Common units representing limited partner interests | 36,363 | USD 13.62 | USD 495,264 | SEC filing ↗ |
| 2026-05-29 | DeWalch D Mark | Purchase (P) | Common units representing limited partner interests | 36,363 | USD 13.48 | USD 490,173 | SEC filing ↗ |
| 2026-05-28 | DeWalch D Mark | Purchase (P) | Common units representing limited partner interests | 37,650 | USD 13.21 | USD 497,357 | SEC filing ↗ |
| 2026-05-13 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 1,120 | USD 13.50 | USD 15,120 | SEC filing ↗ |
| 2026-05-12 | Longmaid Ashley J | Sale (S) | Common units representing limited partner interests | 11,128 | USD 13.45 | USD 149,672 | SEC filing ↗ |
| 2026-05-12 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 19,154 | USD 13.48 | USD 258,196 | SEC filing ↗ |
| 2026-05-11 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 25,000 | USD 13.47 | USD 336,750 | SEC filing ↗ |
| 2026-05-08 | Carter Thomas L Jr | Purchase (P) | Common units representing limited partner interests | 23,604 | USD 13.32 | USD 314,405 | SEC filing ↗ |
| 2026-05-05 | Putman Luke Stevens | Sale (S) | Common units representing limited partner interests | 29,386 | USD 13.75 | USD 404,058 | SEC filing ↗ |
| 2026-04-06 | Putman Luke Stevens | Sale (S) | Common units representing limited partner interests | 29,386 | USD 14.45 | USD 424,628 | SEC filing ↗ |
| 2026-04-06 | Putman Luke Stevens | Sale (S) | Common units representing limited partner interests | 29,386 | USD 14.45 | USD 424,628 | SEC filing ↗ |
| 2026-04-02 | Stuart Alexander D. | Award / grant (A) | Common units representing limited partner interests | 1,570 | USD 15.12 | USD 23,738 | SEC filing ↗ |
| 2026-04-02 | Randall William E. | Award / grant (A) | Common units representing limited partner interests | 1,488 | USD 15.12 | USD 22,499 | SEC filing ↗ |
| 2026-04-02 | Kyle Jerry V. Jr. | Award / grant (A) | Common units representing limited partner interests | 1,240 | USD 15.12 | USD 18,749 | SEC filing ↗ |
| 2026-04-02 | Hamman Anne Lenoir | Award / grant (A) | Common units representing limited partner interests | 473 | USD 15.12 | USD 7,152 | SEC filing ↗ |
| 2026-04-02 | DeWalch D Mark | Award / grant (A) | Common units representing limited partner interests | 1,240 | USD 15.12 | USD 18,749 | SEC filing ↗ |
| 2026-03-11 | Hamman Anne Lenoir | Award / grant (A) | Common units representing limited partner interests | 6,613 | USD 0.00 | USD 0 | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-18 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | BSM |
| CIK | 0001621434 |
| Sector | Energy |
| Industry | Oil & Gas E&P Yahoo Finance |
| SEC SIC | 1311 Crude Petroleum & Natural Gas |
| Exchange | NYSE |
Data coverage
| Local Form 4 history | 396 transaction lines from 2020-01-03 to 2026-10-02 46 P purchase lines · 19 S sale lines · 331 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.