Mark D Dewalch
CIK 1638259 · View on SEC EDGAR ↗
Insider
First SEC filing: Aug. 3, 2015 · Latest: Aug. 3, 2015
On this page
Insider at
Insider transactions
3 buys (P)
0 sells (S)
Net:
$1,482,793
+ 67 non-open-market transactions below
Avg return of open purchases vs now:
8.9%
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
67 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 1, 2026 | BSM | P | 36,363 | $13.62 | $495,264 | 631,248 Indirect | +6.11% | Acquired | 7.4% (price as of 2026-08-19) |
| May 29, 2026 | BSM | P | 36,363 | $13.48 | $490,173 | 594,885 Indirect | +6.51% | Acquired | 8.5% (price as of 2026-08-19) |
| May 28, 2026 | BSM | P | 37,650 | $13.21 | $497,356 | 431,495 Direct | +9.56% | Acquired | 10.7% (price as of 2026-08-19) |
| March 6, 2023 | BSM | P | 3,100 | $15.85 | $49,135 | 13,417 Indirect | +30.05% | Acquired | -7.7% (price as of 2026-08-19) |
| March 6, 2023 | BSM | P | 31,150 | $15.85 | $493,728 | 260,879 Direct | +13.56% | Acquired | -7.7% (price as of 2026-08-19) |
| June 10, 2019 | BSM | P | 5,350 | $16.44 | $87,954 | 40,809 Indirect | +15.09% | Acquired | -11.0% (price as of 2026-08-19) |
| Nov. 16, 2018 | BSM | P | 1,175 | $17.06 | $20,046 | 5,984 Indirect | +24.43% | Acquired | -14.2% (price as of 2026-08-19) |
| July 30, 2015 | BSM | P | 15 | $14.56 | $218 | 4,611 Indirect | +0.33% | Acquired | 0.5% (price as of 2026-08-19) |
| May 6, 2015 | BSM | P | 1,500 | $19.00 | $28,500 | 87,816 Indirect | +1.74% | Acquired | -23.0% (price as of 2026-08-19) |
| May 6, 2015 | BSM | P | 1,500 | $19.00 | $28,500 | 86,316 Indirect | +1.77% | Acquired | -23.0% (price as of 2026-08-19) |
| May 6, 2015 | BSM | P | 2,200 | $19.00 | $41,800 | 84,816 Direct | +2.66% | Acquired | -23.0% (price as of 2026-08-19) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| May 24, 2019 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (20,108) | — | — | 20,108 | Disposed |
| May 24, 2019 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (4,333) | — | — | 4,333 | Disposed |
| May 24, 2019 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (3,827) | — | — | 3,827 | Disposed |
| May 24, 2019 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (70,865) | — | — | 70,865 | Disposed |
| April 5, 2018 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests | — | — | 9 | Disposed |
| April 5, 2018 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests | — | — | 3 | Disposed |
| April 5, 2018 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests | — | — | 3 | Disposed |
| April 5, 2018 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests | — | — | 5 | Disposed |
| April 5, 2018 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (358) | — | — | 358 | Acquired |
| April 5, 2018 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (119) | — | — | 119 | Acquired |
| April 5, 2018 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (119) | — | — | 119 | Acquired |
| April 5, 2018 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (199) | — | — | 199 | Acquired |
| April 28, 2017 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests | — | — | 8 | Disposed |
| April 28, 2017 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests | — | — | 2 | Disposed |
| April 28, 2017 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests | — | — | 2 | Disposed |
| April 28, 2017 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests | — | — | 5 | Disposed |
| April 28, 2017 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (318) | — | — | 318 | Acquired |
| April 28, 2017 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (79) | — | — | 79 | Acquired |
| April 28, 2017 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (79) | — | — | 79 | Acquired |
| April 28, 2017 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (199) | — | — | 199 | Acquired |
| April 8, 2016 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests | — | — | 8 | Disposed |
| April 8, 2016 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests | — | — | 2 | Disposed |
| April 8, 2016 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests | — | — | 2 | Disposed |
| April 8, 2016 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests | — | — | 5 | Disposed |
| April 8, 2016 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (318) | — | — | 318 | Acquired |
| April 8, 2016 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (79) | — | — | 79 | Acquired |
| April 8, 2016 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (79) | — | — | 79 | Acquired |
| April 8, 2016 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (199) | — | — | 199 | Acquired |
| May 6, 2015 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests [F3] | — | — | 25 | Acquired |
| May 6, 2015 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests [F3] | — | — | 7 | Acquired |
| May 6, 2015 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests [F3] | — | — | 7 | Acquired |
| May 6, 2015 | BSM | Preferred units representing limited partner interests | Common and subordinated units representing LP interests [F3] | — | — | 15 | Acquired |
| May 6, 2015 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (19,114) | — | — | 19,114 | Acquired |
| May 6, 2015 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (4,056) | — | — | 4,056 | Acquired |
| May 6, 2015 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (4,056) | — | — | 4,056 | Acquired |
| May 6, 2015 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (3,230) | — | — | 3,230 | Acquired |
| May 6, 2015 | BSM | Subordinated units representing limited partner interests | Common units representing limited partner interests (70,865) | — | — | 70,865 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).