Cynthia Schwarzkopf
CIK 2080596 · View on SEC EDGAR ↗
Insider
First SEC filing: Aug. 13, 2025 · Latest: June 17, 2026
On this page
Insider at
Insider transactions
0 buys (P)
3 sells (S)
Net:
$-1,237,985
+ 9 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
9 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 17, 2026 | MIAX | S 10b5-1 | 5,000 | $42.85 | $214,250 | 88,545 Direct | -5.35% | Disposed | 0.0% (price as of 2026-08-21) |
| July 15, 2026 | MIAX | S 10b5-1 | 5,000 | $42.00 | $210,000 | 88,545 Direct | -5.35% | Disposed | 2.0% (price as of 2026-08-21) |
| June 11, 2026 | MIAX | S 10b5-1 | 19,500 | $41.73 | $813,735 | 81,308 Direct | -19.34% | Disposed | 2.7% (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. 17, 2026 | MIAX | Stock Option (Right to Buy) | Common Stock (5,000) | $12.00 | May 31, 2027 | 5,000 | Disposed |
| July 15, 2026 | MIAX | Stock Option (Right to Buy) | Common Stock (5,000) | $12.00 | May 31, 2027 | 5,000 | Disposed |
| June 16, 2026 | MIAX | Nonqualified Stock Option (Right to Buy) | Common Stock (5,142) | $40.24 | June 15, 2036 | 5,142 | Acquired |
| June 11, 2026 | MIAX | Stock Option (Right to Buy) | Common Stock (19,500) | $12.00 | June 19, 2026 | 19,500 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 13 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Aug. 13, 2025 | MIAX | Series B Preferred Stock→ Common Stock (36,250) | 36,250 | Direct |
| Aug. 13, 2025 | MIAX | Nonvoting Common Stock→ Common Stock (45,058) | 45,058 | Direct |
| Aug. 13, 2025 | MIAX | Stock Option (Right to Buy)→ Nonvoting Common Stock (19,500) | 19,500 | Direct |
| Aug. 13, 2025 | MIAX | Stock Option (Right to Buy)→ Nonvoting Common Stock (21,916) | 21,916 | Direct |
| Aug. 13, 2025 | MIAX | Stock Option (Right to Buy)→ Nonvoting Common Stock (21,250) | 21,250 | Direct |
| Aug. 13, 2025 | MIAX | Stock Option (Right to Buy)→ Nonvoting Common Stock (22,708) | 22,708 | Direct |
| Aug. 13, 2025 | MIAX | Stock Option (Right to Buy)→ Nonvoting Common Stock (28,437) | 28,437 | Direct |
| Aug. 13, 2025 | MIAX | Stock Option (Right to Buy)→ Nonvoting Common Stock (32,501) | 32,501 | Direct |
| Aug. 13, 2025 | MIAX | Stock Option (Right to Buy)→ Common Stock (11,321) | 11,321 | Direct |
| Aug. 13, 2025 | MIAX | Stock Option (Right to Buy)→ Common Stock (7,066) | 7,066 | Direct |
| Aug. 13, 2025 | MIAX | Stock Option (Right to Buy)→ Common Stock (449) | 449 | Direct |
| Aug. 13, 2025 | MIAX | Stock Option (Right to Buy)→ Common Stock (5,287) | 5,287 | Direct |
| Aug. 13, 2025 | MIAX | Stock Option (Right to Buy)→ Common Stock (8,305) | 8,305 | Direct |