Michael Grissinger
Insider
First SEC filing: Jan. 2, 2024 · Latest: June 17, 2026
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
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 |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 3, 2026 | LPCN | A | 2,000 | $2.11 | $4,220 | 2,000 Direct | · | Acquired | -2.8% (price as of 2026-10-02) |
| June 21, 2026 | ACET | A | 4,200 | · | · | 4,200 Direct | · | Acquired | (price as of 2026-10-02) |
| June 16, 2026 | APRE | A | 12,555 | · | · | 12,555 Direct | · | Acquired | (price as of 2026-10-02) |
| June 16, 2026 | APRE | A | 3,135 | · | · | 6,024 Direct | +108.52% | Acquired | (price as of 2026-10-02) |
| June 5, 2025 | APRE | A | 4,185 | · | · | 4,185 Direct | · | Acquired | (price as of 2026-10-02) |
| June 5, 2025 | APRE | A | 1,045 | · | · | 2,889 Direct | +56.67% | Acquired | (price as of 2026-10-02) |
| April 17, 2025 | ACET | A | 70,200 | · | · | 70,200 Direct | · | Acquired | (price as of 2026-10-02) |
| June 28, 2024 | AKTX | A | 5,000,000 | · | · | 5,000,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 20, 2024 | APRE | A | 4,185 | · | · | 4,185 Direct | · | Acquired | (price as of 2026-10-02) |
| June 20, 2024 | APRE | A | 1,045 | · | · | 1,844 Direct | +130.79% | Acquired | (price as of 2026-10-02) |
| Aug. 23, 2023 | APRE | A | 2,000 | · | · | 2,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 23, 2023 | APRE | A | 500 | · | · | 799 Direct | +167.22% | Acquired | (price as of 2026-10-02) |
| July 28, 2022 | APRE | A | 29,575 | · | · | 29,575 Direct | · | Acquired | (price as of 2026-10-02) |
| July 28, 2022 | APRE | A | 5,995 | · | · | 5,995 Direct | · | Acquired | (price as of 2026-10-02) |
| June 3, 2020 | ACET | A | 14,414 | · | · | 14,414 Direct | · | Acquired | (price as of 2026-10-02) |
| May 8, 2019 | ACET | A | 14,414 | · | · | 14,414 Direct | · | Acquired | (price as of 2026-10-02) |
| Nov. 5, 2018 | ACET | A | 28,828 | · | · | 28,828 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 |
|---|---|---|---|---|---|---|---|
| Aug. 3, 2026 | LPCN | Stock Option (Right to Buy) | Common Stock | $2.11 | Aug. 3, 2036 | 2,000 | Acquired |
| June 21, 2026 | ACET | Stock Option (Right to Buy) | Common Stock | $8.10 | June 20, 2036 | 4,200 | Acquired |
| June 16, 2026 | APRE | Stock Options (Right to Buy) | Common Stock | $0.73 | June 16, 2036 | 12,555 | Acquired |
| June 5, 2025 | APRE | Stock Options (Right to Buy) | Common Stock | $1.81 | June 5, 2035 | 4,185 | Acquired |
| April 17, 2025 | ACET | Stock Option (Right to Buy) | Common Stock | $0.53 | April 16, 2035 | 70,200 | Acquired |
| June 28, 2024 | AKTX | Stock Option (Right to Buy) | Ordinary Shares, par value $0.0001 per share [F3] | · | June 28, 2034 | 5,000,000 | Acquired |
| June 20, 2024 | APRE | Stock Options (Right to Buy) | Common Stock | $4.07 | June 20, 2034 | 4,185 | Acquired |
| Aug. 23, 2023 | APRE | Stock Options (Right to Buy) | Common Stock | $3.65 | Aug. 23, 2033 | 2,000 | Acquired |
| July 28, 2022 | APRE | Stock Option (right to Buy) | Common Stock | $1.09 | July 28, 2032 | 29,575 | Acquired |
| June 3, 2020 | ACET | Stock Option (Right to Buy) | Common Stock | $2.23 | June 2, 2030 | 14,414 | Acquired |
| May 8, 2019 | ACET | Stock Option (Right to Buy) | Common Stock | $7.99 | May 7, 2029 | 14,414 | Acquired |
| Nov. 5, 2018 | ACET | Stock Option (Right to Buy) | Common Stock | $11.82 | Nov. 4, 2028 | 28,828 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 10 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Jan. 2, 2024 | AKTX | Ordinary Shares, par value $0.0001 per share | 20,000,000 | Direct |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy) | 1,300,000 | Direct |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy) | 1,300,000 | Direct |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy) | 1,300,000 | Direct |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy) | 1,300,000 | Direct |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy) | 1,300,000 | Direct |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy) | 1,300,000 | Direct |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy) | 3,700,000 | Direct |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy) | 5,000,000 | Direct |
| May 26, 2022 | APRE | Stock Option (right to buy) | 72,638 | Direct |