Maryann T. Seaman
CIK 1408964 · View on SEC EDGAR ↗
Insider
First SEC filing: May 14, 2026 · Latest: May 14, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 100 non-open-market transactions below
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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 3, 2026 | MPC | F | 908 | $311.78 | $283,096 | 110,939 Direct | -0.81% | Disposed | 16.4% (price as of 2026-08-21) |
| June 11, 2026 | PRH | A | 23 | $106.51 | $2,450 | 1,777 Direct | +1.31% | Acquired | -79.9% (price as of 2026-08-21) |
| May 12, 2026 | PRH | A | 1,754 | — | — | 1,754 Direct | — | Acquired | (price as of 2026-08-21) |
| April 9, 2026 | OC | A | 163 | $114.95 | $18,737 | 27,410 Direct | +0.60% | Acquired | 28.9% (price as of 2026-08-21) |
| March 2, 2026 | MPC | F | 952 | $206.30 | $196,398 | 114,861 Direct | -0.82% | Disposed | 75.9% (price as of 2026-08-21) |
| March 2, 2026 | MPC | F | 778 | $206.30 | $160,501 | 114,083 Direct | -0.68% | Disposed | 75.9% (price as of 2026-08-21) |
| March 2, 2026 | MPC | F | 2,236 | $206.30 | $461,287 | 111,847 Direct | -1.96% | Disposed | 75.9% (price as of 2026-08-21) |
| March 2, 2026 | MPLX | F | 3,407 | $59.22 | $201,763 | 175,272 Direct | -1.91% | Disposed | -1.1% (price as of 2026-08-21) |
| March 2, 2026 | MPLX | F | 3,404 | $59.22 | $201,585 | 171,868 Direct | -1.94% | Disposed | -1.1% (price as of 2026-08-21) |
| March 2, 2026 | MPLX | F | 6,409 | $59.22 | $379,541 | 165,459 Direct | -3.73% | Disposed | -1.1% (price as of 2026-08-21) |
| March 1, 2026 | MPC | A | 15,266 | — | — | 115,813 Direct | +15.18% | Acquired | (price as of 2026-08-21) |
| March 1, 2026 | MPLX | A | 52,817 | — | — | 178,679 Direct | +41.96% | Acquired | (price as of 2026-08-21) |
| Feb. 27, 2026 | OC | A | 412 | $122.07 | $50,293 | 27,247 Direct | +1.54% | Acquired | 21.4% (price as of 2026-08-21) |
| Jan. 21, 2026 | OC | A | 147 | $124.68 | $18,328 | 26,835 Direct | +0.55% | Acquired | 18.8% (price as of 2026-08-21) |
| Nov. 7, 2025 | OC | A | 439 | $104.20 | $45,744 | 26,688 Direct | +1.67% | Acquired | 42.2% (price as of 2026-08-21) |
| Nov. 6, 2025 | OC | A | 159 | $104.94 | $16,685 | 26,249 Direct | +0.61% | Acquired | 41.2% (price as of 2026-08-21) |
| Aug. 8, 2025 | OC | A | 318 | $143.88 | $45,754 | 26,091 Direct | +1.23% | Acquired | 3.0% (price as of 2026-08-21) |
| Aug. 7, 2025 | OC | A | 111 | $147.17 | $16,336 | 25,773 Direct | +0.43% | Acquired | 0.7% (price as of 2026-08-21) |
| Aug. 1, 2025 | MPC | F | 908 | $166.39 | $151,082 | 100,547 Direct | -0.89% | Disposed | 118.0% (price as of 2026-08-21) |
| May 9, 2025 | OC | A | 335 | $136.44 | $45,707 | 25,661 Direct | +1.32% | Acquired | 8.6% (price as of 2026-08-21) |
| April 10, 2025 | OC | A | 119 | $134.48 | $16,003 | 25,326 Direct | +0.47% | Acquired | 10.2% (price as of 2026-08-21) |
| March 3, 2025 | MPLX | F | 3,404 | $54.34 | $184,973 | 125,862 Direct | -2.63% | Disposed | 7.8% (price as of 2026-08-21) |
| March 3, 2025 | MPLX | F | 3,407 | $54.34 | $185,136 | 129,266 Direct | -2.57% | Disposed | 7.8% (price as of 2026-08-21) |
| March 3, 2025 | MPLX | F | 3,290 | $54.34 | $178,779 | 132,673 Direct | -2.42% | Disposed | 7.8% (price as of 2026-08-21) |
| March 3, 2025 | MPC | F | 778 | $148.65 | $115,650 | 101,455 Direct | -0.76% | Disposed | 144.1% (price as of 2026-08-21) |
| March 3, 2025 | MPC | F | 952 | $148.65 | $141,515 | 102,233 Direct | -0.92% | Disposed | 144.1% (price as of 2026-08-21) |
| March 3, 2025 | MPC | F | 1,389 | $148.65 | $206,475 | 103,185 Direct | -1.33% | Disposed | 144.1% (price as of 2026-08-21) |
| March 1, 2025 | MPLX | A | 48,863 | — | — | 135,963 Direct | +56.10% | Acquired | (price as of 2026-08-21) |
| March 1, 2025 | MPC | A | 17,048 | — | — | 104,574 Direct | +19.48% | Acquired | (price as of 2026-08-21) |
| Feb. 26, 2025 | OC | A | 296 | $154.36 | $45,691 | 25,207 Direct | +1.19% | Acquired | -4.0% (price as of 2026-08-21) |
| Jan. 17, 2025 | OC | A | 86 | $182.68 | $15,710 | 24,911 Direct | +0.35% | Acquired | -18.9% (price as of 2026-08-21) |
| Nov. 8, 2024 | OC | A | 240 | $190.44 | $45,706 | 24,825 Direct | +0.98% | Acquired | -22.2% (price as of 2026-08-21) |
| Nov. 4, 2024 | OC | A | 82 | $179.40 | $14,711 | 24,585 Direct | +0.33% | Acquired | -17.4% (price as of 2026-08-21) |
| Aug. 8, 2024 | OC | A | 295 | $155.12 | $45,760 | 24,503 Direct | +1.22% | Acquired | -4.5% (price as of 2026-08-21) |
| Aug. 2, 2024 | OC | A | 85 | $169.68 | $14,423 | 24,208 Direct | +0.35% | Acquired | -12.7% (price as of 2026-08-21) |
| Aug. 1, 2024 | MPC | A | 6,921 | — | — | 87,526 Direct | +8.59% | Acquired | (price as of 2026-08-21) |
| April 26, 2024 | OC | A | 272 | $168.50 | $45,832 | 24,122 Direct | +1.14% | Acquired | -12.1% (price as of 2026-08-21) |
| April 4, 2024 | OC | A | 84 | $168.95 | $14,192 | 23,850 Direct | +0.35% | Acquired | -12.3% (price as of 2026-08-21) |
| March 1, 2024 | MPC | A | 5,926 | — | — | 80,605 Direct | +7.94% | Acquired | (price as of 2026-08-21) |
| March 1, 2024 | MPC | F | 952 | $172.34 | $164,068 | 74,679 Direct | -1.26% | Disposed | 110.5% (price as of 2026-08-21) |
| March 1, 2024 | MPC | F | 1,389 | $172.34 | $239,380 | 75,631 Direct | -1.80% | Disposed | 110.5% (price as of 2026-08-21) |
| March 1, 2024 | MPC | F | 2,069 | $172.34 | $356,571 | 77,020 Direct | -2.62% | Disposed | 110.5% (price as of 2026-08-21) |
| March 1, 2024 | MPLX | A | 25,947 | — | — | 87,100 Direct | +42.43% | Acquired | (price as of 2026-08-21) |
| March 1, 2024 | MPLX | F | 3,407 | $38.87 | $132,430 | 61,153 Direct | -5.28% | Disposed | 50.7% (price as of 2026-08-21) |
| March 1, 2024 | MPLX | F | 3,290 | $38.87 | $127,882 | 64,560 Direct | -4.85% | Disposed | 50.7% (price as of 2026-08-21) |
| March 1, 2024 | MPLX | F | 4,346 | $38.87 | $168,929 | 67,850 Direct | -6.02% | Disposed | 50.7% (price as of 2026-08-21) |
| Feb. 16, 2024 | OC | A | 327 | $139.95 | $45,764 | 23,766 Direct | +1.40% | Acquired | 5.9% (price as of 2026-08-21) |
| Feb. 1, 2024 | MPC | F | 10,350 | $166.37 | $1,721,930 | 79,089 Direct | -11.57% | Disposed | 118.1% (price as of 2026-08-21) |
| Jan. 19, 2024 | OC | A | 93 | $150.63 | $14,009 | 23,439 Direct | +0.40% | Acquired | -1.6% (price as of 2026-08-21) |
| Nov. 3, 2023 | OC | A | 97 | $122.66 | $11,898 | 23,346 Direct | +0.42% | Acquired | 20.8% (price as of 2026-08-21) |
| Oct. 27, 2023 | OC | A | 383 | $111.53 | $42,716 | 23,249 Direct | +1.67% | Acquired | 32.9% (price as of 2026-08-21) |
| Aug. 4, 2023 | OC | A | 83 | $140.54 | $11,665 | 22,866 Direct | +0.36% | Acquired | 5.4% (price as of 2026-08-21) |
| July 28, 2023 | OC | A | 305 | $140.07 | $42,721 | 22,783 Direct | +1.36% | Acquired | 5.8% (price as of 2026-08-21) |
| April 28, 2023 | OC | A | 400 | $106.81 | $42,724 | 22,478 Direct | +1.81% | Acquired | 38.7% (price as of 2026-08-21) |
| April 6, 2023 | OC | A | 122 | $93.51 | $11,408 | 22,078 Direct | +0.56% | Acquired | 58.5% (price as of 2026-08-21) |
| March 1, 2023 | MPC | F | 2,069 | $126.52 | $261,770 | 83,574 Direct | -2.42% | Disposed | 186.7% (price as of 2026-08-21) |
| March 1, 2023 | MPC | A | 7,254 | — | — | 89,439 Direct | +8.83% | Acquired | (price as of 2026-08-21) |
| March 1, 2023 | MPC | F | 1,389 | $126.52 | $175,736 | 82,185 Direct | -1.66% | Disposed | 186.7% (price as of 2026-08-21) |
| March 1, 2023 | MPLX | A | 25,974 | — | — | 72,196 Direct | +56.19% | Acquired | (price as of 2026-08-21) |
| March 1, 2023 | MPLX | F | 3,290 | $34.54 | $113,637 | 46,222 Direct | -6.64% | Disposed | 69.6% (price as of 2026-08-21) |
| March 1, 2023 | MPLX | F | 4,346 | $34.54 | $150,111 | 49,512 Direct | -8.07% | Disposed | 69.6% (price as of 2026-08-21) |
| Feb. 17, 2023 | OC | A | 428 | $99.93 | $42,770 | 21,956 Direct | +1.99% | Acquired | 48.3% (price as of 2026-08-21) |
| Feb. 1, 2023 | MPC | F | 9,198 | $125.49 | $1,154,257 | 85,643 Direct | -9.70% | Disposed | 189.1% (price as of 2026-08-21) |
| Jan. 19, 2023 | OC | A | 128 | — | — | 21,528 Direct | +0.60% | Acquired | (price as of 2026-08-21) |
| Nov. 3, 2022 | OC | A | 89 | — | — | 21,399 Direct | +0.42% | Acquired | (price as of 2026-08-21) |
| Oct. 28, 2022 | OC | A | 505 | — | — | 21,310 Direct | +2.43% | Acquired | (price as of 2026-08-21) |
| Aug. 4, 2022 | OC | A | 80 | — | — | 20,805 Direct | +0.39% | Acquired | (price as of 2026-08-21) |
| July 29, 2022 | OC | A | 461 | — | — | 20,725 Direct | +2.27% | Acquired | (price as of 2026-08-21) |
| April 29, 2022 | OC | A | 470 | — | — | 20,264 Direct | +2.37% | Acquired | (price as of 2026-08-21) |
| April 7, 2022 | OC | A | 83 | — | — | 19,794 Direct | +0.42% | Acquired | (price as of 2026-08-21) |
| March 1, 2022 | MPLX | A | 25,077 | — | — | 53,858 Direct | +87.13% | Acquired | (price as of 2026-08-21) |
| March 1, 2022 | MPLX | F | 4,346 | $32.63 | $141,810 | 28,781 Direct | -13.12% | Disposed | 79.5% (price as of 2026-08-21) |
| March 1, 2022 | MPC | A | 10,587 | — | — | 94,841 Direct | +12.57% | Acquired | (price as of 2026-08-21) |
| March 1, 2022 | MPC | F | 2,069 | $76.84 | $158,982 | 84,254 Direct | -2.40% | Disposed | 372.1% (price as of 2026-08-21) |
| Feb. 18, 2022 | OC | A | 436 | — | — | 19,712 Direct | +2.26% | Acquired | (price as of 2026-08-21) |
| Feb. 1, 2022 | MPC | F | 8,347 | $72.49 | $605,074 | 86,323 Direct | -8.82% | Disposed | 400.5% (price as of 2026-08-21) |
| Jan. 21, 2022 | OC | A | 75 | — | — | 19,276 Direct | +0.39% | Acquired | (price as of 2026-08-21) |
| Nov. 5, 2021 | OC | A | 51 | — | — | 19,200 Direct | +0.27% | Acquired | (price as of 2026-08-21) |
| Oct. 29, 2021 | OC | A | 434 | — | — | 19,149 Direct | +2.32% | Acquired | (price as of 2026-08-21) |
| Aug. 6, 2021 | OC | A | 50 | — | — | 18,715 Direct | +0.27% | Acquired | (price as of 2026-08-21) |
| July 30, 2021 | OC | A | 421 | — | — | 18,666 Direct | +2.31% | Acquired | (price as of 2026-08-21) |
| April 30, 2021 | OC | A | 418 | — | — | 18,245 Direct | +2.34% | Acquired | (price as of 2026-08-21) |
| April 2, 2021 | OC | A | 49 | — | — | 17,827 Direct | +0.28% | Acquired | (price as of 2026-08-21) |
| March 1, 2021 | MPC | A | 15,770 | — | — | 94,670 Direct | +19.99% | Acquired | (price as of 2026-08-21) |
| March 1, 2021 | MPLX | A | 33,127 | — | — | 33,127 Direct | — | Acquired | (price as of 2026-08-21) |
| Feb. 19, 2021 | OC | A | 476 | — | — | 17,778 Direct | +2.75% | Acquired | (price as of 2026-08-21) |
| Feb. 1, 2021 | MPC | A | 78,900 | — | — | 78,900 Direct | — | Acquired | (price as of 2026-08-21) |
| Jan. 22, 2021 | OC | A | 53 | — | — | 17,302 Direct | +0.31% | Acquired | (price as of 2026-08-21) |
| Nov. 6, 2020 | OC | A | 58 | — | — | 17,249 Direct | +0.34% | Acquired | (price as of 2026-08-21) |
| Oct. 30, 2020 | OC | A | 619 | — | — | 17,191 Direct | +3.74% | Acquired | (price as of 2026-08-21) |
| Aug. 7, 2020 | OC | A | 57 | — | — | 16,572 Direct | +0.35% | Acquired | (price as of 2026-08-21) |
| July 31, 2020 | OC | A | 670 | — | — | 16,515 Direct | +4.23% | Acquired | (price as of 2026-08-21) |
| May 1, 2020 | OC | A | 980 | — | — | 15,845 Direct | +6.59% | Acquired | (price as of 2026-08-21) |
| April 3, 2020 | OC | A | 101 | — | — | 14,865 Direct | +0.68% | Acquired | (price as of 2026-08-21) |
| Feb. 21, 2020 | OC | A | 615 | — | — | 14,764 Direct | +4.35% | Acquired | (price as of 2026-08-21) |
| Jan. 17, 2020 | OC | A | 52 | — | — | 14,149 Direct | +0.37% | Acquired | (price as of 2026-08-21) |
| Nov. 4, 2019 | OC | A | 47 | — | — | 14,097 Direct | +0.33% | Acquired | (price as of 2026-08-21) |
| Oct. 25, 2019 | OC | A | 610 | — | — | 14,051 Direct | +4.54% | Acquired | (price as of 2026-08-21) |
| Aug. 2, 2019 | OC | A | 50 | — | — | 13,441 Direct | +0.37% | Acquired | (price as of 2026-08-21) |
| July 26, 2019 | OC | A | 658 | — | — | 13,391 Direct | +5.17% | Acquired | (price as of 2026-08-21) |
Showing latest 100 of 134 transactions
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 |
|---|---|---|---|---|---|---|---|
| June 11, 2026 | PRH | 2026 Restricted Stock Units | Common Stock (23) | — | — | 23 | Acquired |
| May 12, 2026 | PRH | 2026 Restricted Stock Units | Common Stock (1,754) | — | — | 1,754 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 3 holdings
Securities held when first becoming an insider, per SEC Form 3.