Douglas J Montalbano
CIK 1991888 · View on SEC EDGAR ↗
Insider
First SEC filing: Sept. 5, 2023 · Latest: Sept. 2, 2025
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 40 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. 30, 2025 | MTRX | M | 1,881 | — | — | 1,881 Direct | -50.00% | Disposed | (price as of 2026-08-21) |
| Aug. 30, 2025 | MTRX | M | 1,210 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| Aug. 30, 2025 | MTRX | F | 7,052 | $15.13 | $106,697 | 62,352 Direct | -10.16% | Disposed | -25.8% (price as of 2026-08-21) |
| Aug. 30, 2025 | MTRX | A | 16,406 | — | — | 69,404 Direct | +30.96% | Acquired | (price as of 2026-08-21) |
| Aug. 30, 2025 | MTRX | F | 808 | $15.13 | $12,225 | 52,998 Direct | -1.50% | Disposed | -25.8% (price as of 2026-08-21) |
| Aug. 30, 2025 | MTRX | D | 1,881 | $15.13 | $28,460 | 53,806 Direct | -3.38% | Disposed | -25.8% (price as of 2026-08-21) |
| Aug. 30, 2025 | MTRX | M | 1,881 | — | — | 55,687 Direct | +3.50% | Acquired | (price as of 2026-08-21) |
| Aug. 30, 2025 | MTRX | F | 520 | $15.13 | $7,868 | 53,806 Direct | -0.96% | Disposed | -25.8% (price as of 2026-08-21) |
| Aug. 30, 2025 | MTRX | D | 1,210 | $15.13 | $18,307 | 54,326 Direct | -2.18% | Disposed | -25.8% (price as of 2026-08-21) |
| Aug. 30, 2025 | MTRX | M | 1,210 | — | — | 55,536 Direct | +2.23% | Acquired | (price as of 2026-08-21) |
| Aug. 29, 2025 | MTRX | M | 3,529 | — | — | 7,058 Direct | -33.33% | Disposed | (price as of 2026-08-21) |
| Aug. 29, 2025 | MTRX | F | 1,517 | $15.13 | $22,952 | 54,326 Direct | -2.72% | Disposed | -25.8% (price as of 2026-08-21) |
| Aug. 29, 2025 | MTRX | D | 3,529 | $15.13 | $53,394 | 55,843 Direct | -5.94% | Disposed | -25.8% (price as of 2026-08-21) |
| Aug. 29, 2025 | MTRX | M | 3,529 | — | — | 59,372 Direct | +6.32% | Acquired | (price as of 2026-08-21) |
| Aug. 27, 2025 | MTRX | M | 2,462 | — | — | 7,383 Direct | -25.01% | Disposed | (price as of 2026-08-21) |
| Aug. 27, 2025 | MTRX | A | 7,909 | — | — | 7,909 Direct | — | Acquired | (price as of 2026-08-21) |
| Aug. 27, 2025 | MTRX | F | 1,058 | $15.37 | $16,261 | 55,843 Direct | -1.86% | Disposed | -26.9% (price as of 2026-08-21) |
| Aug. 27, 2025 | MTRX | D | 2,462 | $15.37 | $37,841 | 56,901 Direct | -4.15% | Disposed | -26.9% (price as of 2026-08-21) |
| Aug. 27, 2025 | MTRX | M | 2,462 | — | — | 59,363 Direct | +4.33% | Acquired | (price as of 2026-08-21) |
| Aug. 27, 2025 | MTRX | A | 7,909 | — | — | 56,901 Direct | +16.14% | Acquired | (price as of 2026-08-21) |
| Aug. 30, 2024 | MTRX | M | 1,881 | — | — | 3,762 Direct | -33.33% | Disposed | (price as of 2026-08-21) |
| Aug. 30, 2024 | MTRX | M | 1,211 | — | — | 1,210 Direct | -50.02% | Disposed | (price as of 2026-08-21) |
| Aug. 30, 2024 | MTRX | F | 1,176 | $9.96 | $11,713 | 48,992 Direct | -2.34% | Disposed | 12.8% (price as of 2026-08-21) |
| Aug. 30, 2024 | MTRX | A | 2,737 | — | — | 50,168 Direct | +5.77% | Acquired | (price as of 2026-08-21) |
| Aug. 30, 2024 | MTRX | F | 808 | $9.96 | $8,048 | 47,431 Direct | -1.67% | Disposed | 12.8% (price as of 2026-08-21) |
| Aug. 30, 2024 | MTRX | D | 1,881 | $9.96 | $18,735 | 48,239 Direct | -3.75% | Disposed | 12.8% (price as of 2026-08-21) |
| Aug. 30, 2024 | MTRX | M | 1,881 | — | — | 50,120 Direct | +3.90% | Acquired | (price as of 2026-08-21) |
| Aug. 30, 2024 | MTRX | F | 520 | $9.96 | $5,179 | 48,239 Direct | -1.07% | Disposed | 12.8% (price as of 2026-08-21) |
| Aug. 30, 2024 | MTRX | D | 1,211 | $9.96 | $12,062 | 48,759 Direct | -2.42% | Disposed | 12.8% (price as of 2026-08-21) |
| Aug. 30, 2024 | MTRX | M | 1,211 | — | — | 49,970 Direct | +2.48% | Acquired | (price as of 2026-08-21) |
| Aug. 29, 2024 | MTRX | M | 3,529 | — | — | 10,587 Direct | -25.00% | Disposed | (price as of 2026-08-21) |
| Aug. 29, 2024 | MTRX | F | 1,517 | $9.95 | $15,094 | 48,759 Direct | -3.02% | Disposed | 12.9% (price as of 2026-08-21) |
| Aug. 29, 2024 | MTRX | D | 3,529 | $9.95 | $35,114 | 50,276 Direct | -6.56% | Disposed | 12.9% (price as of 2026-08-21) |
| Aug. 29, 2024 | MTRX | M | 3,529 | — | — | 53,805 Direct | +7.02% | Acquired | (price as of 2026-08-21) |
| Aug. 27, 2024 | MTRX | A | 9,845 | — | — | 9,845 Direct | — | Acquired | (price as of 2026-08-21) |
| Aug. 27, 2024 | MTRX | A | 9,845 | — | — | 50,276 Direct | +24.35% | Acquired | (price as of 2026-08-21) |
| Aug. 24, 2024 | MTRX | M | 1,114 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| Aug. 24, 2024 | MTRX | F | 478 | $10.00 | $4,780 | 40,431 Direct | -1.17% | Disposed | 12.3% (price as of 2026-08-21) |
| Aug. 24, 2024 | MTRX | D | 1,114 | $10.00 | $11,140 | 40,909 Direct | -2.65% | Disposed | 12.3% (price as of 2026-08-21) |
| Aug. 24, 2024 | MTRX | M | 1,114 | — | — | 42,023 Direct | +2.72% | Acquired | (price as of 2026-08-21) |
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, 2025 | MTRX | RESTRICTED STOCK UNITS | COMMON STOCK (1,881) | — | Aug. 30, 2026 | 1,881 | Disposed |
| Aug. 30, 2025 | MTRX | RESTRICTED STOCK UNITS | COMMON STOCK (1,210) | — | Aug. 30, 2025 | 1,210 | Disposed |
| Aug. 29, 2025 | MTRX | RESTRICTED STOCK UNITS | COMMON STOCK (3,529) | — | Aug. 29, 2027 | 3,529 | Disposed |
| Aug. 27, 2025 | MTRX | RESTRICTED STOCK UNITS | COMMON STOCK (2,462) | — | Aug. 27, 2028 | 2,462 | Disposed |
| Aug. 27, 2025 | MTRX | RESTRICTED STOCK UNITS | COMMON STOCK (7,909) | — | Aug. 27, 2029 | 7,909 | Acquired |
| Aug. 30, 2024 | MTRX | RESTRICTED STOCK UNITS | COMMON STOCK (1,881) | — | Aug. 30, 2026 | 1,881 | Disposed |
| Aug. 30, 2024 | MTRX | RESTRICTED STOCK UNITS | COMMON STOCK (1,211) | — | Aug. 30, 2025 | 1,211 | Disposed |
| Aug. 29, 2024 | MTRX | RESTRICTED STOCK UNITS | COMMON STOCK (3,529) | — | Aug. 29, 2027 | 3,529 | Disposed |
| Aug. 27, 2024 | MTRX | RESTRICTED STOCK UNITS | COMMON STOCK [F1] (9,845) | — | Aug. 27, 2028 | 9,845 | Acquired |
| Aug. 24, 2024 | MTRX | RESTRICTED STOCK UNITS | COMMON STOCK [F1] (1,114) | — | Aug. 24, 2024 | 1,114 | Disposed |
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.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Sept. 5, 2023 | MTRX | COMMON STOCK [F1] | 40,909 | Direct |
| Sept. 5, 2023 | MTRX | RESTRICTED STOCK UNITS→ COMMON STOCK [F1] (1,114) | 1,114 | Direct |
| Sept. 5, 2023 | MTRX | RESTRICTED STOCK UNITS→ COMMON STOCK [F1] (2,421) | 2,421 | Direct |
| Sept. 5, 2023 | MTRX | RESTRICTED STOCK UNITS→ COMMON STOCK [F1] (5,643) | 5,643 | Direct |
| Sept. 5, 2023 | MTRX | RESTRICTED STOCK UNITS→ COMMON STOCK [F1] (14,116) | 14,116 | Direct |