Brian C. Thomas
CIK 1996097 · View on SEC EDGAR ↗
First SEC filing: Feb. 8, 2024 · Latest: Feb. 8, 2024
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
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 |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 5, 2025 | MGX | S | 3,830 | $1.77 | $6,779 | 2,510,960 Direct | -0.15% | Disposed | -30.5% (price as of 2026-08-19) |
| Sept. 5, 2025 | MGX | S | 2,701 | $1.81 | $4,889 | 2,514,790 Direct | -0.11% | Disposed | -32.0% (price as of 2026-08-19) |
| June 6, 2025 | MGX | S | 10,785 | $1.75 | $18,874 | 2,517,491 Direct | -0.43% | Disposed | -29.7% (price as of 2026-08-19) |
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 |
|---|---|---|---|---|---|---|---|
| April 1, 2025 | MGX | Stock Option (Right to Buy) | Common Stock (196,000) | $1.32 | March 31, 2035 | 196,000 | Acquired |
| April 1, 2024 | MGX | Stock Option (Right to Buy) | Common Stock (500,323) | $10.82 | March 31, 2034 | 500,323 | 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 |
|---|---|---|---|---|
| Feb. 8, 2024 | MGX | Common Stock | 2,377,284 | 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 | $563,014 | — | — | — | — | — | $599,746 | $1,396,061 |
| 2024 | $628,333 | — | — | — | $265,200 | — | $19,766 | $6,061,284 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.