Brian Schopfer
Insider
First SEC filing: Oct. 22, 2021 · Latest: Oct. 22, 2021
Insider at
Insider transactions
1 buys (P)
2 sells (S)
Net: $-2,453,500
Avg return of open purchases vs now: -6.4%
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 |
|---|---|---|---|---|---|---|---|---|---|
| Sept. 2, 2026 | MIR | P | 20,000 | $15.60 | $312,000 | 933,290 Direct | +2.19% | Acquired | -6.4% (price as of 2026-10-02) |
| April 1, 2026 | MIR | F | 7,377 | $18.59 | $137,138 | 913,290 Direct | -0.80% | Disposed | -21.5% (price as of 2026-10-02) |
| March 2, 2026 | MIR | A | 64,906 | · | · | 949,166 Direct | +7.34% | Acquired | (price as of 2026-10-02) |
| March 2, 2026 | MIR | F | 28,499 | $21.61 | $615,863 | 920,667 Direct | -3.00% | Disposed | -32.4% (price as of 2026-10-02) |
| March 1, 2026 | MIR | F | 9,172 | $21.61 | $198,207 | 884,260 Direct | -1.03% | Disposed | -32.4% (price as of 2026-10-02) |
| Dec. 27, 2025 | MIR | F | 8,500 | $23.76 | $201,960 | 893,432 Direct | -0.94% | Disposed | -38.6% (price as of 2026-10-02) |
| Dec. 8, 2025 | MIR | G | 100 | · | · | 901,932 Direct | -0.01% | Disposed | (price as of 2026-10-02) |
| Dec. 5, 2025 | MIR | G | 2,400 | · | · | 902,032 Direct | -0.27% | Disposed | (price as of 2026-10-02) |
| Nov. 6, 2025 | MIR | A | 100,000 | · | · | 1,004,432 Direct | +11.06% | Acquired | (price as of 2026-10-02) |
| Nov. 6, 2025 | MIR | D | 100,000 | · | · | 399,935 Direct | -20.00% | Disposed | (price as of 2026-10-02) |
| Nov. 6, 2025 | MIR | S 10b5-1 | 50,000 | $27.65 | $1,382,500 | 954,432 Direct | -4.98% | Disposed | -47.2% (price as of 2026-10-02) |
| Nov. 6, 2025 | MIR | S 10b5-1 | 50,000 | $27.66 | $1,383,000 | 904,432 Direct | -5.24% | Disposed | -47.2% (price as of 2026-10-02) |
| Oct. 30, 2025 | MIR | G | 15,000 | · | · | 904,432 Direct | -1.63% | Disposed | (price as of 2026-10-02) |
| June 25, 2025 | MIR | A | 75,000 | · | · | 994,432 Direct | +8.16% | Acquired | (price as of 2026-10-02) |
| June 25, 2025 | MIR | D | 75,000 | · | · | 499,935 Direct | -13.04% | Disposed | (price as of 2026-10-02) |
| June 25, 2025 | MIR | S 10b5-1 | 75,000 | $21.00 | $1,575,000 | 919,432 Direct | -7.54% | Disposed | -30.5% (price as of 2026-10-02) |
| May 21, 2025 | MIR | A | 75,000 | · | · | 994,432 Direct | +8.16% | Acquired | (price as of 2026-10-02) |
| May 21, 2025 | MIR | D | 75,000 | · | · | 574,935 Direct | -11.54% | Disposed | (price as of 2026-10-02) |
| May 21, 2025 | MIR | S 10b5-1 | 75,000 | $18.27 | $1,370,250 | 919,432 Direct | -7.54% | Disposed | -20.1% (price as of 2026-10-02) |
| May 14, 2025 | MIR | A | 65,154 | · | · | 948,581 Direct | +7.38% | Acquired | (price as of 2026-10-02) |
| May 14, 2025 | MIR | F | 29,149 | $17.43 | $508,067 | 919,432 Direct | -3.07% | Disposed | -16.2% (price as of 2026-10-02) |
| April 1, 2025 | MIR | F | 14,801 | $14.50 | $214,614 | 883,427 Direct | -1.65% | Disposed | 0.7% (price as of 2026-10-02) |
| March 1, 2025 | MIR | F | 8,983 | $15.53 | $139,506 | 898,228 Direct | -0.99% | Disposed | -6.0% (price as of 2026-10-02) |
| Feb. 25, 2025 | MIR | A | 35,820 | · | · | 923,615 Direct | +4.03% | Acquired | (price as of 2026-10-02) |
| Feb. 25, 2025 | MIR | F | 16,404 | $15.10 | $247,700 | 907,211 Direct | -1.78% | Disposed | -3.3% (price as of 2026-10-02) |
| Dec. 27, 2024 | MIR | F | 8,538 | $18.10 | $154,538 | 887,795 Direct | -0.95% | Disposed | -19.3% (price as of 2026-10-02) |
| Dec. 17, 2024 | MIR | C | 525,000 | · | · | 896,333 Direct | +141.38% | Acquired | (price as of 2026-10-02) |
| Dec. 17, 2024 | MIR | C | 525,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Nov. 12, 2024 | MIR | C | 175,000 | · | · | 371,333 Direct | +89.13% | Acquired | (price as of 2026-10-02) |
| Nov. 12, 2024 | MIR | C | 175,000 | · | · | 525,000 Direct | -25.00% | Disposed | (price as of 2026-10-02) |
| April 1, 2024 | MIR | F | 14,834 | $11.37 | $168,663 | 196,333 Direct | -7.02% | Disposed | 28.4% (price as of 2026-10-02) |
| March 20, 2024 | MIR | A | 90,910 | · | · | 302,077 Direct | +43.05% | Acquired | (price as of 2026-10-02) |
| March 20, 2024 | MIR | D | 90,910 | · | · | 649,935 Direct | -12.27% | Disposed | (price as of 2026-10-02) |
| March 20, 2024 | MIR | S 10b5-1 | 90,910 | $11.00 | $1,000,010 | 211,167 Direct | -30.09% | Disposed | 32.7% (price as of 2026-10-02) |
| March 1, 2024 | MIR | A | 60,240 | · | · | 211,167 Direct | +39.91% | Acquired | (price as of 2026-10-02) |
| Dec. 27, 2023 | MIR | F | 8,606 | $10.45 | $89,933 | 150,927 Direct | -5.39% | Disposed | 39.7% (price as of 2026-10-02) |
| April 1, 2023 | MIR | F | 7,451 | $8.54 | $63,632 | 159,533 Direct | -4.46% | Disposed | 71.0% (price as of 2026-10-02) |
| March 29, 2023 | MIR | A | 49,689 | · | · | 166,984 Direct | +42.36% | Acquired | (price as of 2026-10-02) |
| Dec. 27, 2022 | MIR | F | 8,606 | $6.49 | $55,853 | 117,295 Direct | -6.84% | Disposed | 125.0% (price as of 2026-10-02) |
| April 1, 2022 | MIR | A | 49,566 | · | · | 866,746 Direct | +6.07% | Acquired | (price as of 2026-10-02) |
| Dec. 27, 2021 | MIR | A | 76,335 | · | · | 817,180 Direct | +10.30% | Acquired | (price as of 2026-10-02) |
| Dec. 27, 2021 | MIR | A | 76,335 | · | · | 817,180 Direct | +10.30% | Acquired | (price as of 2026-10-02) |
| Oct. 20, 2021 | MIR | A | 740,845 | · | · | 740,845 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 |
|---|---|---|---|---|---|---|---|
| Dec. 17, 2024 | MIR | Sponsor Units | Class A Common Stock | · | · | 525,000 | Disposed |
| Nov. 12, 2024 | MIR | Sponsor Units | Class A Common Stock | · | · | 175,000 | Disposed |
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. 22, 2021 | MIR | Sponsor Units [F1] | 700,000 | Direct |