David (James) Miller
Insider
First SEC filing: Sept. 4, 2026 · Latest: Sept. 4, 2026
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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 30, 2026 | MTRX | M | 967 | · | · | 24,713 Direct | +4.07% | Acquired | (price as of 2026-09-04) |
| Aug. 30, 2026 | MTRX | D | 967 | $10.83 | $10,473 | 23,746 Direct | -3.91% | Disposed | -1.9% (price as of 2026-09-04) |
| Aug. 30, 2026 | MTRX | F | 380 | $10.83 | $4,115 | 23,366 Direct | -1.60% | Disposed | -1.9% (price as of 2026-09-04) |
| Aug. 30, 2026 | MTRX | M | 967 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-09-04) |
| Aug. 29, 2026 | MTRX | M | 2,370 | · | · | 27,048 Direct | +9.60% | Acquired | (price as of 2026-09-04) |
| Aug. 29, 2026 | MTRX | D | 2,370 | $10.83 | $25,667 | 24,678 Direct | -8.76% | Disposed | -1.9% (price as of 2026-09-04) |
| Aug. 29, 2026 | MTRX | F | 932 | $10.83 | $10,094 | 23,746 Direct | -3.78% | Disposed | -1.9% (price as of 2026-09-04) |
| Aug. 29, 2026 | MTRX | M | 2,370 | · | · | 2,369 Direct | -50.01% | Disposed | (price as of 2026-09-04) |
| Aug. 27, 2026 | MTRX | M | 1,702 | · | · | 27,681 Direct | +6.55% | Acquired | (price as of 2026-09-04) |
| Aug. 27, 2026 | MTRX | D | 1,702 | $10.91 | $18,569 | 25,979 Direct | -6.15% | Disposed | -2.7% (price as of 2026-09-04) |
| Aug. 27, 2026 | MTRX | F | 669 | $10.91 | $7,299 | 25,310 Direct | -2.58% | Disposed | -2.7% (price as of 2026-09-04) |
| Aug. 27, 2026 | MTRX | M | 1,607 | · | · | 26,917 Direct | +6.35% | Acquired | (price as of 2026-09-04) |
| Aug. 27, 2026 | MTRX | D | 1,607 | $10.91 | $17,532 | 25,310 Direct | -5.97% | Disposed | -2.7% (price as of 2026-09-04) |
| Aug. 27, 2026 | MTRX | F | 632 | $10.91 | $6,895 | 24,678 Direct | -2.50% | Disposed | -2.7% (price as of 2026-09-04) |
| Aug. 27, 2026 | MTRX | M | 1,702 | · | · | 3,404 Direct | -33.33% | Disposed | (price as of 2026-09-04) |
| Aug. 27, 2026 | MTRX | M | 1,607 | · | · | 4,819 Direct | -25.01% | Disposed | (price as of 2026-09-04) |
| Aug. 25, 2026 | MTRX | A | 5,432 | · | · | 25,979 Direct | +26.44% | Acquired | (price as of 2026-09-04) |
| Aug. 25, 2026 | MTRX | A | 5,432 | · | · | 5,432 Direct | · | Acquired | (price as of 2026-09-04) |
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 |
|---|---|---|---|---|---|---|---|
| Aug. 30, 2026 | MTRX | Restricted Stock Units | Common Stock | · | Aug. 30, 2026 | 967 | Disposed |
| Aug. 29, 2026 | MTRX | Restricted Stock Units | Common Stock | · | Aug. 29, 2027 | 2,370 | Disposed |
| Aug. 27, 2026 | MTRX | Restricted Stock Units | Common Stock | · | Aug. 27, 2028 | 1,702 | Disposed |
| Aug. 27, 2026 | MTRX | Restricted Stock Units | Common Stock | · | Aug. 27, 2029 | 1,607 | Disposed |
| Aug. 25, 2026 | MTRX | Restricted Stock Units | Common Stock | · | Aug. 25, 2029 | 5,432 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.