Michael Grissinger
CIK 1757601 · View on SEC EDGAR ↗
Insider
First SEC filing: Jan. 2, 2024 · Latest: June 17, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 17 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
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 | -0.2% (price as of 2026-08-19) |
| June 21, 2026 | ACET | A | 4,200 | — | — | 4,200 Direct | — | Acquired | (price as of 2026-08-19) |
| June 16, 2026 | APRE | A | 12,555 | — | — | 12,555 Direct | — | Acquired | (price as of 2026-08-19) |
| June 16, 2026 | APRE | A | 3,135 | — | — | 6,024 Direct | +108.52% | Acquired | (price as of 2026-08-19) |
| June 5, 2025 | APRE | A | 4,185 | — | — | 4,185 Direct | — | Acquired | (price as of 2026-08-19) |
| June 5, 2025 | APRE | A | 1,045 | — | — | 2,889 Direct | +56.67% | Acquired | (price as of 2026-08-19) |
| April 17, 2025 | ACET | A | 70,200 | — | — | 70,200 Direct | — | Acquired | (price as of 2026-08-19) |
| June 28, 2024 | AKTX | A | 5,000,000 | — | — | 5,000,000 Direct | — | Acquired | (price as of 2026-08-19) |
| June 20, 2024 | APRE | A | 4,185 | — | — | 4,185 Direct | — | Acquired | (price as of 2026-08-19) |
| June 20, 2024 | APRE | A | 1,045 | — | — | 1,844 Direct | +130.79% | Acquired | (price as of 2026-08-19) |
| Aug. 23, 2023 | APRE | A | 2,000 | — | — | 2,000 Direct | — | Acquired | (price as of 2026-08-19) |
| Aug. 23, 2023 | APRE | A | 500 | — | — | 799 Direct | +167.22% | Acquired | (price as of 2026-08-19) |
| July 28, 2022 | APRE | A | 29,575 | — | — | 29,575 Direct | — | Acquired | (price as of 2026-08-19) |
| July 28, 2022 | APRE | A | 5,995 | — | — | 5,995 Direct | — | Acquired | (price as of 2026-08-19) |
| June 3, 2020 | ACET | A | 14,414 | — | — | 14,414 Direct | — | Acquired | (price as of 2026-08-19) |
| May 8, 2019 | ACET | A | 14,414 | — | — | 14,414 Direct | — | Acquired | (price as of 2026-08-19) |
| Nov. 5, 2018 | ACET | A | 28,828 | — | — | 28,828 Direct | — | Acquired | (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 |
|---|---|---|---|---|---|---|---|
| Aug. 3, 2026 | LPCN | Stock Option (Right to Buy) | Common Stock (2,000) | $2.11 | Aug. 3, 2036 | 2,000 | Acquired |
| June 21, 2026 | ACET | Stock Option (Right to Buy) | Common Stock (4,200) | $8.10 | June 20, 2036 | 4,200 | Acquired |
| June 16, 2026 | APRE | Stock Options (Right to Buy) | Common Stock (12,555) | $0.73 | June 16, 2036 | 12,555 | Acquired |
| June 5, 2025 | APRE | Stock Options (Right to Buy) | Common Stock (4,185) | $1.81 | June 5, 2035 | 4,185 | Acquired |
| April 17, 2025 | ACET | Stock Option (Right to Buy) | Common Stock (70,200) | $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] (5,000,000) | — | June 28, 2034 | 5,000,000 | Acquired |
| June 20, 2024 | APRE | Stock Options (Right to Buy) | Common Stock (4,185) | $4.07 | June 20, 2034 | 4,185 | Acquired |
| Aug. 23, 2023 | APRE | Stock Options (Right to Buy) | Common Stock (2,000) | $3.65 | Aug. 23, 2033 | 2,000 | Acquired |
| July 28, 2022 | APRE | Stock Option (right to Buy) | Common Stock (29,575) | $1.09 | July 28, 2032 | 29,575 | Acquired |
| June 3, 2020 | ACET | Stock Option (Right to Buy) | Common Stock (14,414) | $2.23 | June 2, 2030 | 14,414 | Acquired |
| May 8, 2019 | ACET | Stock Option (Right to Buy) | Common Stock (14,414) | $7.99 | May 7, 2029 | 14,414 | Acquired |
| Nov. 5, 2018 | ACET | Stock Option (Right to Buy) | Common Stock (28,828) | $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)→ Ordinary Shares, par value $0.0001 per share (1,300,000) | 1,300,000 | Direct |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy)→ Ordinary Shares, par value $0.0001 per share (1,300,000) | 1,300,000 | Direct |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy)→ Ordinary Shares, par value $0.0001 per share (1,300,000) | 1,300,000 | Direct |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy)→ Ordinary Shares, par value $0.0001 per share (1,300,000) | 1,300,000 | Direct |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy)→ Ordinary Shares, par value $0.0001 per share (1,300,000) | 1,300,000 | Direct |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy)→ Ordinary Shares, par value $0.0001 per share (1,300,000) | 1,300,000 | Direct |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy)→ Ordinary Shares, par value $0.0001 per share (3,700,000) | 3,700,000 | Direct |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy)→ Ordinary Shares, par value $0.0001 per share (5,000,000) | 5,000,000 | Direct |
| May 26, 2022 | APRE | Stock Option (right to buy)→ Common Stock (72,638) | 72,638 | Direct |