Martina Mcisaac
CIK 1947693 · View on SEC EDGAR ↗
Insider
First SEC filing: Oct. 3, 2022 · Latest: Oct. 3, 2022
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 50 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 |
|---|---|---|---|---|---|---|---|---|---|
| Nov. 4, 2025 | MSM | M | 59 | — | — | 604 Direct | -8.90% | Disposed | (price as of 2026-08-21) |
| Nov. 4, 2025 | MSM | M | 1,397 | — | — | 4,191 Direct | -25.00% | Disposed | (price as of 2026-08-21) |
| Nov. 4, 2025 | MSM | M | 135 | — | — | 663 Direct | -16.92% | Disposed | (price as of 2026-08-21) |
| Nov. 4, 2025 | MSM | M | 1,135 | — | — | 1,136 Direct | -49.98% | Disposed | (price as of 2026-08-21) |
| Nov. 4, 2025 | MSM | F | 355 | $86.42 | $30,679 | 8,271 Direct | -4.12% | Disposed | 37.3% (price as of 2026-08-21) |
| Nov. 4, 2025 | MSM | M | 59 | — | — | 8,626 Direct | +0.69% | Acquired | (price as of 2026-08-21) |
| Nov. 4, 2025 | MSM | M | 1,397 | — | — | 8,567 Direct | +19.48% | Acquired | (price as of 2026-08-21) |
| Nov. 4, 2025 | MSM | F | 310 | $86.42 | $26,790 | 7,170 Direct | -4.14% | Disposed | 37.3% (price as of 2026-08-21) |
| Nov. 4, 2025 | MSM | M | 135 | — | — | 7,480 Direct | +1.84% | Acquired | (price as of 2026-08-21) |
| Nov. 4, 2025 | MSM | M | 1,135 | — | — | 7,345 Direct | +18.28% | Acquired | (price as of 2026-08-21) |
| Nov. 3, 2025 | MSM | M | 77 | — | — | 798 Direct | -8.80% | Disposed | (price as of 2026-08-21) |
| Nov. 3, 2025 | MSM | M | 959 | — | — | 1,918 Direct | -33.33% | Disposed | (price as of 2026-08-21) |
| Nov. 3, 2025 | MSM | A | 20,049 | — | — | 20,049 Direct | — | Acquired | (price as of 2026-08-21) |
| Nov. 3, 2025 | MSM | F | 253 | $84.79 | $21,452 | 6,210 Direct | -3.91% | Disposed | 39.9% (price as of 2026-08-21) |
| Nov. 3, 2025 | MSM | M | 77 | — | — | 6,463 Direct | +1.21% | Acquired | (price as of 2026-08-21) |
| Nov. 3, 2025 | MSM | M | 959 | — | — | 6,386 Direct | +17.67% | Acquired | (price as of 2026-08-21) |
| Oct. 3, 2025 | MSM | M | 140 | — | — | 875 Direct | -13.79% | Disposed | (price as of 2026-08-21) |
| Oct. 3, 2025 | MSM | M | 1,173 | — | — | 1,173 Direct | -50.00% | Disposed | (price as of 2026-08-21) |
| Oct. 3, 2025 | MSM | F | 320 | $91.99 | $29,437 | 5,427 Direct | -5.57% | Disposed | 28.9% (price as of 2026-08-21) |
| Oct. 3, 2025 | MSM | M | 140 | — | — | 5,747 Direct | +2.50% | Acquired | (price as of 2026-08-21) |
| Oct. 3, 2025 | MSM | M | 1,173 | — | — | 5,607 Direct | +26.45% | Acquired | (price as of 2026-08-21) |
| Nov. 4, 2024 | MSM | M | 84 | — | — | 447 Direct | -15.82% | Disposed | (price as of 2026-08-21) |
| Nov. 4, 2024 | MSM | M | 1,135 | — | — | 2,271 Direct | -33.32% | Disposed | (price as of 2026-08-21) |
| Nov. 4, 2024 | MSM | A | 5,588 | — | — | 5,588 Direct | — | Acquired | (price as of 2026-08-21) |
| Nov. 4, 2024 | MSM | F | 297 | $80.52 | $23,914 | 4,434 Direct | -6.28% | Disposed | 47.3% (price as of 2026-08-21) |
| Nov. 4, 2024 | MSM | M | 84 | — | — | 4,731 Direct | +1.81% | Acquired | (price as of 2026-08-21) |
| Nov. 4, 2024 | MSM | M | 1,135 | — | — | 4,647 Direct | +32.32% | Acquired | (price as of 2026-08-21) |
| Nov. 3, 2024 | MSM | M | 35 | — | — | 532 Direct | -6.17% | Disposed | (price as of 2026-08-21) |
| Nov. 3, 2024 | MSM | M | 958 | — | — | 2,877 Direct | -24.98% | Disposed | (price as of 2026-08-21) |
| Nov. 3, 2024 | MSM | F | 242 | $80.70 | $19,529 | 3,512 Direct | -6.45% | Disposed | 47.0% (price as of 2026-08-21) |
| Nov. 3, 2024 | MSM | M | 35 | — | — | 3,754 Direct | +0.94% | Acquired | (price as of 2026-08-21) |
| Nov. 3, 2024 | MSM | M | 958 | — | — | 3,719 Direct | +34.70% | Acquired | (price as of 2026-08-21) |
| Oct. 3, 2024 | MSM | M | 87 | — | — | 567 Direct | -13.30% | Disposed | (price as of 2026-08-21) |
| Oct. 3, 2024 | MSM | M | 1,173 | — | — | 2,346 Direct | -33.33% | Disposed | (price as of 2026-08-21) |
| Oct. 3, 2024 | MSM | F | 307 | $83.51 | $25,638 | 2,761 Direct | -10.01% | Disposed | 42.0% (price as of 2026-08-21) |
| Oct. 3, 2024 | MSM | M | 87 | — | — | 3,068 Direct | +2.92% | Acquired | (price as of 2026-08-21) |
| Oct. 3, 2024 | MSM | M | 1,173 | — | — | 2,981 Direct | +64.88% | Acquired | (price as of 2026-08-21) |
| Nov. 4, 2023 | MSM | M | 41 | — | — | 252 Direct | -13.99% | Disposed | (price as of 2026-08-21) |
| Nov. 4, 2023 | MSM | M | 1,135 | — | — | 3,406 Direct | -24.99% | Disposed | (price as of 2026-08-21) |
| Nov. 4, 2023 | MSM | F | 287 | $97.78 | $28,063 | 1,808 Direct | -13.70% | Disposed | 21.3% (price as of 2026-08-21) |
| Nov. 4, 2023 | MSM | M | 41 | — | — | 2,095 Direct | +2.00% | Acquired | (price as of 2026-08-21) |
| Nov. 4, 2023 | MSM | M | 1,135 | — | — | 2,054 Direct | +123.50% | Acquired | (price as of 2026-08-21) |
| Nov. 3, 2023 | MSM | A | 3,835 | — | — | 3,835 Direct | — | Acquired | (price as of 2026-08-21) |
| Oct. 3, 2023 | MSM | M | 43 | — | — | 294 Direct | -12.76% | Disposed | (price as of 2026-08-21) |
| Oct. 3, 2023 | MSM | M | 1,173 | — | — | 3,519 Direct | -25.00% | Disposed | (price as of 2026-08-21) |
| Oct. 3, 2023 | MSM | F | 297 | $96.76 | $28,738 | 919 Direct | -24.42% | Disposed | 22.6% (price as of 2026-08-21) |
| Oct. 3, 2023 | MSM | M | 43 | — | — | 1,216 Direct | +3.67% | Acquired | (price as of 2026-08-21) |
| Oct. 3, 2023 | MSM | M | 1,173 | — | — | 1,173 Direct | — | Acquired | (price as of 2026-08-21) |
| Nov. 4, 2022 | MSM | A | 4,541 | — | — | 4,541 Direct | — | Acquired | (price as of 2026-08-21) |
| Oct. 3, 2022 | MSM | A | 4,692 | — | — | 4,692 Direct | — | 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 |
|---|---|---|---|---|---|---|---|
| Nov. 4, 2025 | MSM | Dividend Equivalent Units | Class A Common Stock, $0.001 par value (59) | — | — | 59 | Disposed |
| Nov. 4, 2025 | MSM | Restricted Stock Units (RSU) | Class A Common Stock, $0.001 par value (1,397) | — | — | 1,397 | Disposed |
| Nov. 4, 2025 | MSM | Dividend Equivalent Units | Class A Common Stock, $0.001 par value (135) | — | — | 135 | Disposed |
| Nov. 4, 2025 | MSM | Restricted Stock Units (RSU) | Class A Common Stock, $0.001 par value (1,135) | — | — | 1,135 | Disposed |
| Nov. 3, 2025 | MSM | Dividend Equivalent Units | Class A Common Stock, $0.001 par value (77) | — | — | 77 | Disposed |
| Nov. 3, 2025 | MSM | Restricted Stock Units (RSU) | Class A Common Stock, $0.001 par value (959) | — | — | 959 | Disposed |
| Nov. 3, 2025 | MSM | Restricted Stock Units (RSU) | Class A Common Stock, $0.001 par value (20,049) | — | — | 20,049 | Acquired |
| Oct. 3, 2025 | MSM | Dividend Equivalent Units | Class A Common Stock, $0.001 par value (140) | — | — | 140 | Disposed |
| Oct. 3, 2025 | MSM | Restricted Stock Units (RSU) | Class A Common Stock, $0.001 par value (1,173) | — | — | 1,173 | Disposed |
| Nov. 4, 2024 | MSM | Dividend Equivalent Units | Class A Common Stock, $0.001 par value (84) | — | — | 84 | Disposed |
| Nov. 4, 2024 | MSM | Restricted Stock Units (RSU) | Class A Common Stock, $0.001 par value (1,135) | — | — | 1,135 | Disposed |
| Nov. 4, 2024 | MSM | Restricted Stock Units (RSU) | Class A Common Stock, $0.001 par value (5,588) | — | — | 5,588 | Acquired |
| Nov. 3, 2024 | MSM | Dividend Equivalent Units | Class A Common Stock, $0.001 par value (35) | — | — | 35 | Disposed |
| Nov. 3, 2024 | MSM | Restricted Stock Units (RSU) | Class A Common Stock, $0.001 par value (958) | — | — | 958 | Disposed |
| Oct. 3, 2024 | MSM | Dividend Equivalent Units | Class A Common Stock, $0.001 par value (87) | — | — | 87 | Disposed |
| Oct. 3, 2024 | MSM | Restricted Stock Units (RSU) | Class A Common Stock, $0.001 par value (1,173) | — | — | 1,173 | Disposed |
| Nov. 4, 2023 | MSM | Dividend Equivalent Units | Class A Common Stock, $0.001 par value (41) | — | — | 41 | Disposed |
| Nov. 4, 2023 | MSM | Restricted Stock Units (RSU) | Class A Common Stock, $0.001 par value (1,135) | — | — | 1,135 | Disposed |
| Nov. 3, 2023 | MSM | Restricted Stock Units (RSU) | Class A Common Stock, $0.001 par value (3,835) | — | — | 3,835 | Acquired |
| Oct. 3, 2023 | MSM | Dividend Equivalent Units | Class A Common Stock, $0.001 par value (43) | — | — | 43 | Disposed |
| Oct. 3, 2023 | MSM | Restricted Stock Units (RSU) | Class A Common Stock, $0.001 par value (1,173) | — | — | 1,173 | Disposed |
| Nov. 4, 2022 | MSM | Restricted Stock Units (RSU) | Class A Common Stock, $0.001 par value (4,541) | — | — | 4,541 | Acquired |
| Oct. 3, 2022 | MSM | Restricted Stock Units (RSU) | Class A Common Stock, $0.001 par value (4,692) | — | — | 4,692 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Oct. 3, 2022 | MSM | Class A Common Stock, $0.001 par value | 0 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $625,327 | — | — | — | $473,266 | — | $242,703 | $2,241,188 |
| 2024 | $565,548 | — | — | — | — | — | $29,034 | $1,344,555 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.