BSM
insider transactionsBlack Stone Minerals, L.P. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 30d
+110.4K
110.4K buy · 0 sell
Net value · 30d
$1.5M
$1.5M in · $0 out
Sentiment · 30d
Net buying
100% buying · 0% selling
Open-market trades · 30d
3
110.4K buy · 0 sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Buy·P
Director
$495.3K
36.4K sh · $13.62
Own +6%
-
Buy·P
Director
$490.0K
36.4K sh · $13.48
Own +7%
-
Buy·P
Director
$497.3K
37.6K sh · $13.21
Own +10%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 1, 2026 | Mark D Dewalch | Buy P | 36.4K | $495.3K |
| May 29, 2026 | Mark D Dewalch | Buy P | 36.4K | $490.0K |
| May 28, 2026 | Mark D Dewalch | Buy P | 37.6K | $497.3K |
About BSM insider trading
This page tracks insider transactions for Black Stone Minerals, L.P. (BSM) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.