Melissa Cox
Insider
First SEC filing: May 13, 2022 · Latest: May 13, 2022
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 20, 2026 | DTM | A | 1,452 | · | · | 1,452 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 17, 2026 | DTM | F | 5,240 | $132.65 | $695,086 | 12,133 Direct | -30.16% | Disposed | -7.4% (price as of 2026-10-05) |
| Feb. 17, 2026 | DTM | A | 11,019 | · | · | 17,373 Direct | +173.42% | Acquired | (price as of 2026-10-05) |
| Feb. 1, 2026 | DTM | M | 2,094 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Feb. 1, 2026 | DTM | F | 1,179 | $126.02 | $148,578 | 6,354 Direct | -15.65% | Disposed | -2.5% (price as of 2026-10-05) |
| Feb. 1, 2026 | DTM | M | 2,362 | · | · | 7,533 Direct | +45.68% | Acquired | (price as of 2026-10-05) |
| Jan. 28, 2026 | DTM | A | 2,850 | · | · | 2,850 Direct | · | Acquired | (price as of 2026-10-05) |
| Aug. 11, 2025 | DTM | S | 4,755 | $104.47 | $496,755 | 5,171 Direct | -47.90% | Disposed | 17.6% (price as of 2026-10-05) |
| Aug. 2, 2025 | DTM | M | 2,252 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Aug. 2, 2025 | DTM | F | 2,041 | $105.61 | $215,550 | 9,926 Direct | -17.06% | Disposed | 16.3% (price as of 2026-10-05) |
| Aug. 2, 2025 | DTM | M | 2,597 | · | · | 11,967 Direct | +27.72% | Acquired | (price as of 2026-10-05) |
| Feb. 25, 2025 | DTM | A | 1,480 | · | · | 1,480 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 25, 2025 | DTM | F | 3,375 | $95.80 | $323,325 | 9,370 Direct | -26.48% | Disposed | 28.3% (price as of 2026-10-05) |
| Feb. 25, 2025 | DTM | A | 7,409 | · | · | 12,745 Direct | +138.85% | Acquired | (price as of 2026-10-05) |
| Feb. 4, 2025 | DTM | M | 1,589 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Feb. 4, 2025 | DTM | F | 790 | $101.32 | $80,043 | 5,336 Direct | -12.90% | Disposed | 21.3% (price as of 2026-10-05) |
| Feb. 4, 2025 | DTM | M | 1,589 | · | · | 6,126 Direct | +35.02% | Acquired | (price as of 2026-10-05) |
| Aug. 2, 2024 | DTM | F | 574 | $72.85 | $41,816 | 4,537 Direct | -11.23% | Disposed | 68.7% (price as of 2026-10-05) |
| Aug. 2, 2024 | DTM | M | 1,126 | · | · | 2,252 Direct | -33.33% | Disposed | (price as of 2026-10-05) |
| Aug. 2, 2024 | DTM | M | 1,258 | · | · | 5,111 Direct | +32.65% | Acquired | (price as of 2026-10-05) |
| Feb. 15, 2024 | DTM | A | 2,843 | · | · | 2,843 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 15, 2024 | DTM | F | 872 | $52.43 | $45,719 | 3,853 Direct | -18.46% | Disposed | 134.4% (price as of 2026-10-05) |
| Feb. 15, 2024 | DTM | A | 1,734 | · | · | 4,725 Direct | +57.97% | Acquired | (price as of 2026-10-05) |
| Jan. 27, 2024 | DTM | M | 513 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Jan. 27, 2024 | DTM | F | 285 | $54.67 | $15,581 | 2,991 Direct | -8.70% | Disposed | 124.7% (price as of 2026-10-05) |
| Jan. 27, 2024 | DTM | M | 560 | · | · | 3,276 Direct | +20.62% | Acquired | (price as of 2026-10-05) |
| Aug. 2, 2023 | DTM | M | 1,126 | · | · | 3,378 Direct | -25.00% | Disposed | (price as of 2026-10-05) |
| Aug. 2, 2023 | DTM | F | 547 | $51.62 | $28,236 | 2,716 Direct | -16.76% | Disposed | 138.0% (price as of 2026-10-05) |
| Aug. 2, 2023 | DTM | M | 1,200 | · | · | 3,263 Direct | +58.17% | Acquired | (price as of 2026-10-05) |
| Feb. 3, 2023 | DTM | F | 718 | $54.65 | $39,239 | 2,063 Direct | -25.82% | Disposed | 124.8% (price as of 2026-10-05) |
| Feb. 1, 2023 | DTM | A | 2,094 | · | · | 2,094 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 1, 2023 | DTM | A | 1,411 | · | · | 2,781 Direct | +102.99% | Acquired | (price as of 2026-10-05) |
| Jan. 29, 2023 | DTM | M | 513 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Jan. 29, 2023 | DTM | F | 187 | $53.90 | $10,079 | 1,370 Direct | -12.01% | Disposed | 128.0% (price as of 2026-10-05) |
| Jan. 29, 2023 | DTM | M | 532 | · | · | 1,557 Direct | +51.90% | Acquired | (price as of 2026-10-05) |
| Aug. 8, 2022 | DTM | J | 363 | $51.50 | $18,694 | 0 Indirect | -100.00% | Disposed | 138.6% (price as of 2026-10-05) |
| May 6, 2022 | DTM | A | 861 | · | · | 861 Direct | · | Acquired | (price as of 2026-10-05) |
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 |
|---|---|---|---|---|---|---|---|
| Feb. 20, 2026 | DTM | Restricted Stock Units | Common stock | · | · | 1,452 | Acquired |
| Feb. 1, 2026 | DTM | Restricted Stock Units | Common stock | · | · | 2,094 | Disposed |
| Jan. 28, 2026 | DTM | Restricted Stock Units | Common stock | · | · | 2,850 | Acquired |
| Aug. 2, 2025 | DTM | Restricted Stock Units | Common Stock | · | · | 2,252 | Disposed |
| Feb. 25, 2025 | DTM | Restricted Stock Units | Common Stock | · | · | 1,480 | Acquired |
| Feb. 4, 2025 | DTM | Restricted Stock Units | Common Stock | · | · | 1,589 | Disposed |
| Aug. 2, 2024 | DTM | Restricted Stock Units | Common Stock | · | · | 1,126 | Disposed |
| Feb. 15, 2024 | DTM | Restricted Stock Units | Common Stock | · | · | 2,843 | Acquired |
| Jan. 27, 2024 | DTM | Restricted Stock Units | Common Stock | · | · | 513 | Disposed |
| Aug. 2, 2023 | DTM | Restricted Stock Units | Common Stock | · | · | 1,126 | Disposed |
| Feb. 1, 2023 | DTM | Restricted Stock Units | Common Stock | · | · | 2,094 | Acquired |
| Jan. 29, 2023 | DTM | Restricted Stock Units | Common Stock | · | · | 513 | Disposed |
| May 6, 2022 | DTM | Restricted Stock Units | Common Stock | · | · | 861 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 6 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| May 13, 2022 | DTM | Common Stock | 1,025 | Direct |
| May 13, 2022 | DTM | Common Stock | 358 | Indirect |
| May 13, 2022 | DTM | Restricted Stock Units [F1] | · | Direct |
| May 13, 2022 | DTM | Restricted Stock Units [F1] | · | Direct |
| May 13, 2022 | DTM | Restricted Stock Units | · | Direct |
| May 13, 2022 | DTM | Restricted Stock Units | · | Direct |