70 transactions on file (12 open-market purchases and 6 open-market sales).
6 open-market sales by BSM insiders, between Sep 8, 2025 and Aug 6, 2026.
Discretionary.
Planned (10b5-1).
Not stated.
The 12 open-market purchases on file carry no plan label.
| Date | Insider | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-08-18 | Stuart Alexander D. Director Gift | Gift | −15,900 | $0.00 | −0 | 2,040,075 |
| 2026-08-06 | Whitehead James Director Open-market sale Discretionary | Open-market sale Discretionary | −498,343 | $13.21 | −6.58M | 0 |
| 2026-08-06 | Whitehead James Director Open-market sale Discretionary | Open-market sale Discretionary | −1,628,762 | $13.21 | −21.52M | 646,058 |
| 2026-07-31 | Kyle Jerry V. Jr. Director Other | Other | +7,665 | - | - | 7,665 |
| 2026-07-02 | Randall William E. Director Grant / award | Grant / award | +1,610 | $13.97 | +22.49K | 193,384 |
65 more transactions are on Measure
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| Insider | Role | On Sep 23, 2025 | Now | Change | Sold | Shape |
|---|---|---|---|---|---|---|
| Putman Luke StevensSVP, General Counsel, and Sec | SVP, General Counsel, and Sec | 791,693 | 702,645 | −11.25% | $1.29M$425K no plan · $866K on a plan | |
| Longmaid Ashley JDirector | Director | 148,463 | 137,335 | −7.50% | $150K$150K no plan | |
| Carter Thomas L JrExecutive Chairman, Director | Executive Chairman, Director | 3,613,846 | 3,682,724 | +1.91% | - |
2 more insiders are on Measure
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The assistant answers from what BSM has actually filed: 13 annual reports filed with the SEC and 65 Form 4 filings from the last year. Every figure in a reply links to the filing it came from, so an answer can be checked rather than believed.
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Source
From SEC Form 4 filings, filed within two business days of a transaction.
Past transactions say nothing about future ones, and none of this is investment advice.
What each insider held after every open-market trade, over the last twelve months.
Be told the next time a BSM insider trades
Watch BSM and every open-market Form 4 worth a row (a purchase, a senior officer's sale, anything at a million dollars) lands in the bell and a daily email, with the 10b5-1 word on it when the filing says so. Free.
See who bought, not who was handed shares
Every Form 4 BSM insiders file, not just the latest handful, with vesting and tax withholding struck out so what's left reads as a decision.
Every filingMeasure
Follow the investors who hold it
Each stake priced at the quarter it was filed, and diffed against the quarter before: how big a bet it is for them, and by how much it moved.
Every position, sizedMeasure
Ask what a run of filings adds up to
Whether this is one decision or a pattern, and how it compares with BSM's own history of insider activity.
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The table above says who traded. This says what BSM did over the following 30, 90 and 180 days after each open-market purchase and sale, from this company’s own record rather than a study about companies in general, and with the number of transactions shown beside every average.
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