Ray Prudo, M.D.
Insider
Activist
First SEC filing: Jan. 2, 2024 · Latest: March 4, 2026
Insider at
Insider transactions
4 buys (P)
0 sells (S)
Net: $402,127
Avg return of open purchases vs now: -45.5%
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 |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 16, 2025 | AKTX | P | 618,658 | · | · | 618,658 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 16, 2025 | AKTX | P | 618,658 | $0.40 | $247,463 | 618,658 Direct | · | Acquired | -45.5% (price as of 2026-10-02) |
| Dec. 16, 2025 | AKTX | P | 386,661 | · | · | 386,661 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 16, 2025 | AKTX | P | 386,661 | $0.40 | $154,664 | 386,661 Direct | · | Acquired | -45.5% (price as of 2026-10-02) |
| March 20, 2025 | AKTX | A | 225,000 | · | · | 225,000 Direct | · | Acquired | (price as of 2026-10-02) |
| March 20, 2025 | AKTX | A | 175,000 | · | · | 175,000 Direct | · | Acquired | (price as of 2026-10-02) |
| March 6, 2025 | AKTX | A | 446,428 | $1.12 | $499,999 | 446,428 Direct | · | Acquired | -80.5% (price as of 2026-10-02) |
| March 6, 2025 | AKTX | A | 446,428 | $1.12 | $499,999 | 446,428 Direct | · | Acquired | -80.5% (price as of 2026-10-02) |
| March 6, 2025 | AKTX | A | 446,428 | $1.12 | $499,999 | 2,484,990 Direct | +21.90% | Acquired | -80.5% (price as of 2026-10-02) |
| Dec. 2, 2024 | AKTX | A | 419,286,000 | · | · | 419,286,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 2, 2024 | AKTX | A | 419,286,000 | · | · | 4,077,124,600 Direct | +11.46% | Acquired | (price as of 2026-10-02) |
| June 28, 2024 | AKTX | A | 10,000,000 | · | · | 10,000,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 31, 2024 | AKTX | A | 1,326,258,000 | · | · | 1,326,258,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 31, 2024 | AKTX | A | 1,326,258,000 | · | · | 3,657,838,600 Direct | +56.88% | 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. 16, 2025 | AKTX | Warrants to purchase American Depositary Shares ("ADRs") [F1,F2] | American Depositary Shares representing Ordinary Shares | $0.39 | · | 618,658 | Acquired |
| Dec. 16, 2025 | AKTX | Pre-Funded Warrants to purchase ADRs [F1,F2] | American Depositary Shares representing Ordinary Shares | · | · | 618,658 | Acquired |
| Dec. 16, 2025 | AKTX | Warrants to purchase ADRs [F1,F5] | American Depositary Shares representing Ordinary Shares | $0.39 | · | 386,661 | Acquired |
| Dec. 16, 2025 | AKTX | Pre-Funded Warrants to purchase ADRs [F1,F5] | American Depositary Shares representing Ordinary Shares | · | · | 386,661 | Acquired |
| March 20, 2025 | AKTX | Stock Option (Right to Buy) | American Depositary Shares representing Ordinary Shares [F1] | $1.50 | March 20, 2035 | 225,000 | Acquired |
| March 20, 2025 | AKTX | Stock Option (Right to Buy) | American Depositary Shares representing Ordinary Shares [F1] | $1.50 | March 20, 2035 | 175,000 | Acquired |
| March 6, 2025 | AKTX | Series B Warrants (Right to Buy) | American Depositary Shares representing Ordinary Shares [F1] | $0.87 | March 6, 2030 | 446,428 | Acquired |
| March 6, 2025 | AKTX | Series A Warrants (Right to Buy) | American Depositary Shares representing Ordinary Shares [F1] | $0.87 | March 6, 2026 | 446,428 | Acquired |
| Dec. 2, 2024 | AKTX | Warrants (Right to Buy) | Ordinary Shares, par value $0.0001 per share [F1] | · | Dec. 2, 2027 | 419,286,000 | Acquired |
| June 28, 2024 | AKTX | Stock Option (Right to Buy) | Ordinary Shares, par value $0.0001 per share [F3] | · | June 28, 2034 | 10,000,000 | Acquired |
| May 31, 2024 | AKTX | Warrants (Right to Buy) | Ordinary Shares, par value $0.0001 per share [F1] | · | May 31, 2027 | 1,326,258,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 11 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 | 2,331,580,600 | Direct |
| Jan. 2, 2024 | AKTX | Ordinary Shares, par value $0.0001 per share | 38,709,600 | Indirect |
| Jan. 2, 2024 | AKTX | Ordinary Shares, par value $0.0001 per share | 800,766,600 | Indirect |
| Jan. 2, 2024 | AKTX | Stock Option (Right to Buy) | 10,000,000 | Direct |
| Jan. 2, 2024 | AKTX | Warrants (Right to Buy) | 9,210,500 | Indirect |
| Jan. 2, 2024 | AKTX | Warrants (Right to Buy) | 7,500,000 | Direct |
| Jan. 2, 2024 | AKTX | Warrants (Right to Buy) | 20,229,700 | Direct |
| Jan. 2, 2024 | AKTX | Warrants (Right to Buy) | 41,666,700 | Direct |
| Jan. 2, 2024 | AKTX | Warrants (Right to Buy) | 117,647,100 | Direct |
| Jan. 2, 2024 | AKTX | Warrants (Right to Buy) | 117,647,100 | Direct |
| Sept. 23, 2015 | AKTX | Ordinary Shares | 722,345,600 | Indirect |