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sellWeak cluster of 210b5-1 plan

Luke Stevens Putman sold $404k of BSM

SVP, General Counsel, and Sec at Black Stone Minerals, L.P.. 29,386 shares at an average of $13.75, traded May 5, 2026, filed May 6, 2026.

Warning score
19
Value
$404k
29,386 shares
Holdings after
702,645
-4% from before
From 52-week low
+22%
low $10.73, close $13.09
From 52-week high
-11%
high $14.76, as of May 5, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $404k at market
    +16
  • Share of holdings sold
    Sold 4.0% of holdings
    0
  • Cluster
    2 insiders selling within 14 days
    +8
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m +4.7%, 3m +9.7%, 6m -.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

BSMOct 12, 2026 · close 14.84
Since filing May 6, 2026: +14.4%SPY +6.6% · excess +7.8%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001337171-26-000013, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 5, 2026SOpen-market sale
Common units representing limited partner interests10b5-1
-29,386$13.75$404k702,645May 6, 2026

Related signals

Other insiders at Black Stone Minerals, L.P. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
70Notable
BSMsell
Black Stone Minerals, L.P.
James Whitehead
director
$28M
2,127,105 shares
-427%
48Moderate
BSMbuy
Black Stone Minerals, L.P.
D Mark DeWalch
director
$985k
72,726 shares
+13%
36Weak
BSMbuy
Black Stone Minerals, L.P.
D Mark DeWalch
director
$497k
37,650 shares
+10%
20Weak
BSMbuy
Black Stone Minerals, L.P.
Thomas L Carter Jr
Executive Chairman
$15k
1,120 shares
+0%
34Weak
BSMsell 2
Black Stone Minerals, L.P.
Ashley J Longmaid
director
$150k
11,128 shares
-7%
44Moderate
BSMbuy
Black Stone Minerals, L.P.
Thomas L Carter Jr
Executive Chairman
$909k
67,758 shares
+2%
12Weak
BSMsell10b5-1
Black Stone Minerals, L.P.
Luke Stevens Putman
SVP, General Counsel, and Sec
$462k
30,276 shares
-4%
11Weak
BSMsell10b5-1
Black Stone Minerals, L.P.
Luke Stevens Putman
SVP, General Counsel, and Sec
$425k
29,386 shares
-4%
31Weak
BSMsell
Black Stone Minerals, L.P.
Luke Stevens Putman
SVP, General Counsel, and Sec
$425k
29,386 shares
-4%
12Weak
BSMsell10b5-1
Black Stone Minerals, L.P.
Luke Stevens Putman
SVP, General Counsel, and Sec
$462k
30,276 shares
-4%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Luke Stevens Putman sold $404k of BSM | InsiderTell