David Christopher Ryan
Insider
First SEC filing: Nov. 25, 2020 · Latest: Nov. 25, 2020
Insider at
Insider transactions
0 buys (P)
1 sells (S)
Net: $-1,037,814
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 |
|---|---|---|---|---|---|---|---|---|---|
| May 6, 2026 | MGRB | S | 3,402 | $305.06 | $1,037,814 | 1,092 Direct | -75.70% | Disposed | -94.8% (price as of 2026-10-02) |
| March 5, 2026 | MGRB | A | 335 | · | · | 335 Direct | · | Acquired | (price as of 2026-10-02) |
| March 5, 2026 | MGRB | M | 867 | · | · | 3,850 Direct | -18.38% | Disposed | (price as of 2026-10-02) |
| March 5, 2026 | MGRB | M | 867 | · | · | 4,494 Direct | +23.90% | Acquired | (price as of 2026-10-02) |
| Aug. 15, 2025 | MGRB | M | 1,092 | · | · | 4,409 Direct | -19.85% | Disposed | (price as of 2026-10-02) |
| Aug. 15, 2025 | MGRB | M | 1,092 | · | · | 3,627 Direct | +43.08% | Acquired | (price as of 2026-10-02) |
| Aug. 14, 2025 | MGRB | A | 307 | · | · | 307 Direct | · | Acquired | (price as of 2026-10-02) |
| July 31, 2025 | MGRB | A | 477 | · | · | 477 Direct | · | Acquired | (price as of 2026-10-02) |
| March 5, 2025 | MGRB | M | 956 | · | · | 5,024 Direct | -15.99% | Disposed | (price as of 2026-10-02) |
| March 5, 2025 | MGRB | M | 956 | · | · | 2,535 Direct | +60.54% | Acquired | (price as of 2026-10-02) |
| Feb. 6, 2025 | MGRB | A | 367 | · | · | 367 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 6, 2025 | MGRB | A | 548 | · | · | 548 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 15, 2024 | MGRB | M | 545 | · | · | 5,065 Direct | -9.71% | Disposed | (price as of 2026-10-02) |
| Aug. 15, 2024 | MGRB | M | 545 | · | · | 1,579 Direct | +52.71% | Acquired | (price as of 2026-10-02) |
| July 29, 2024 | MGRB | A | 380 | · | · | 380 Direct | · | Acquired | (price as of 2026-10-02) |
| July 29, 2024 | MGRB | A | 544 | · | · | 544 Direct | · | Acquired | (price as of 2026-10-02) |
| March 5, 2024 | MGRB | M | 317 | · | · | 1,034 Direct | +44.21% | Acquired | (price as of 2026-10-02) |
| March 5, 2024 | MGRB | M | 317 | · | · | 4,686 Direct | -6.34% | Disposed | (price as of 2026-10-02) |
| Feb. 5, 2024 | MGRB | A | 638 | · | · | 638 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 5, 2024 | MGRB | A | 318 | · | · | 318 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 15, 2023 | MGRB | M | 370 | · | · | 4,047 Direct | -8.38% | Disposed | (price as of 2026-10-02) |
| Aug. 15, 2023 | MGRB | M | 370 | · | · | 717 Direct | +106.63% | Acquired | (price as of 2026-10-02) |
| July 26, 2023 | MGRB | A | 353 | · | · | 353 Direct | · | Acquired | (price as of 2026-10-02) |
| July 26, 2023 | MGRB | A | 707 | · | · | 707 Direct | · | Acquired | (price as of 2026-10-02) |
| March 5, 2023 | MGRB | M | 171 | · | · | 3,357 Direct | -4.85% | Disposed | (price as of 2026-10-02) |
| March 5, 2023 | MGRB | M | 171 | · | · | 347 Direct | +97.16% | Acquired | (price as of 2026-10-02) |
| Feb. 6, 2023 | MGRB | A | 293 | · | · | 293 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 6, 2023 | MGRB | A | 587 | · | · | 587 Direct | · | Acquired | (price as of 2026-10-02) |
| Nov. 18, 2022 | GRND | C | 20,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Nov. 18, 2022 | GRND | M | 20,000 | · | · | 20,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 15, 2022 | MGRB | M | 176 | · | · | 176 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 15, 2022 | MGRB | M | 176 | · | · | 2,648 Direct | -6.23% | Disposed | (price as of 2026-10-02) |
| Aug. 1, 2022 | MGRB | A | 773 | · | · | 773 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 1, 2022 | MGRB | A | 386 | · | · | 386 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 7, 2022 | MGRB | A | 273 | · | · | 273 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 7, 2022 | MGRB | A | 685 | · | · | 685 Direct | · | Acquired | (price as of 2026-10-02) |
| July 28, 2021 | MGRB | A | 559 | · | · | 559 Direct | · | Acquired | (price as of 2026-10-02) |
| July 28, 2021 | MGRB | A | 707 | · | · | 707 Direct | · | Acquired | (price as of 2026-10-02) |
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 |
|---|---|---|---|---|---|---|---|
| March 5, 2026 | MGRB | Stock Units | Common Stock | · | · | 335 | Acquired |
| March 5, 2026 | MGRB | Stock Units | Common Stock | · | · | 867 | Disposed |
| Aug. 15, 2025 | MGRB | Stock Units | Common Stock | · | · | 1,092 | Disposed |
| Aug. 14, 2025 | MGRB | Deferred Stock Units | Common Stock | · | · | 307 | Acquired |
| July 31, 2025 | MGRB | Restricted Stock Units | Common Stock | · | · | 477 | Acquired |
| March 5, 2025 | MGRB | Stock Units | Common Stock | · | · | 956 | Disposed |
| Feb. 6, 2025 | MGRB | Deferred Stock Units | Common Stock | · | · | 367 | Acquired |
| Feb. 6, 2025 | MGRB | Restricted Stock Units | Common Stock | · | · | 548 | Acquired |
| Aug. 15, 2024 | MGRB | Stock Units | Common Stock | · | · | 545 | Disposed |
| July 29, 2024 | MGRB | Deferred Stock Units | Common Stock | · | · | 380 | Acquired |
| July 29, 2024 | MGRB | Restricted Stock Units | Common Stock | · | · | 544 | Acquired |
| March 5, 2024 | MGRB | Stock Units | Common Stock | · | · | 317 | Disposed |
| Feb. 5, 2024 | MGRB | Restricted Stock Units | Common Stock | · | · | 638 | Acquired |
| Feb. 5, 2024 | MGRB | Deferred Stock Units | Common Stock | · | · | 318 | Acquired |
| Aug. 15, 2023 | MGRB | Stock Units | Common Stock | · | · | 370 | Disposed |
| July 26, 2023 | MGRB | Deferred Stock Units | Common Stock | · | · | 353 | Acquired |
| July 26, 2023 | MGRB | Restricted Stock Units | Common Stock | · | · | 707 | Acquired |
| March 5, 2023 | MGRB | Stock Units | Common Stock | · | · | 171 | Disposed |
| Feb. 6, 2023 | MGRB | Deferred Stock Units | Common Stock | · | · | 293 | Acquired |
| Feb. 6, 2023 | MGRB | Restricted Stock Units | Common Stock | · | · | 587 | Acquired |
| Nov. 18, 2022 | GRND | Class B ordinary shares [F2] | Common Stock | · | · | 20,000 | Disposed |
| Aug. 15, 2022 | MGRB | Stock Units | Common Stock | · | · | 176 | Disposed |
| Aug. 1, 2022 | MGRB | Restricted Stock Units | Common Stock | · | · | 773 | Acquired |
| Aug. 1, 2022 | MGRB | Deferred Stock Units | Common Stock | · | · | 386 | Acquired |
| Feb. 7, 2022 | MGRB | Deferred Stock Units | Common Stock | · | · | 273 | Acquired |
| Feb. 7, 2022 | MGRB | Restricted Stock Units | Common Stock | · | · | 685 | Acquired |
| July 28, 2021 | MGRB | Director Stock Option (Right to Buy) | Common Stock | $155.83 | July 28, 2028 | 559 | Acquired |
| July 28, 2021 | MGRB | Stock Units | Common Stock | · | · | 707 | 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 |
|---|---|---|---|---|
| Nov. 25, 2020 | GRND | Class B Ordinary Shares | 20,000 | Direct |