Richard Brudnick
Insider
First SEC filing: March 18, 2026 · Latest: June 8, 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
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 4, 2026 | SRRK | A | 4,310 | · | · | 4,310 Direct | · | Acquired | (price as of 2026-10-06) |
| June 4, 2026 | SRRK | A | 6,839 | · | · | 21,896 Direct | +45.42% | Acquired | (price as of 2026-10-06) |
| May 29, 2025 | SRRK | S 10b5-1 | 4,675 | $29.63 | $138,520 | 16,457 Direct | -22.12% | Disposed | 43.3% (price as of 2026-10-06) |
| May 29, 2025 | SRRK | S 10b5-1 | 1,400 | $30.00 | $42,000 | 15,057 Direct | -8.51% | Disposed | 41.5% (price as of 2026-10-06) |
| May 22, 2025 | SRRK | A | 9,206 | · | · | 9,206 Direct | · | Acquired | (price as of 2026-10-06) |
| May 22, 2025 | SRRK | A | 7,632 | · | · | 21,132 Direct | +56.53% | Acquired | (price as of 2026-10-06) |
| May 20, 2025 | PRME | P | 20,000 | $1.19 | $23,800 | 20,000 Direct | · | Acquired | 194.1% (price as of 2026-10-06) |
| Feb. 27, 2025 | PRME | A | 225,000 | · | · | 225,000 Direct | · | Acquired | (price as of 2026-10-06) |
| Dec. 5, 2024 | PRME | A | 19,300 | · | · | 57,900 Direct | +50.00% | Acquired | (price as of 2026-10-06) |
| June 27, 2024 | SRRK | A | 13,500 | · | · | 13,500 Direct | · | Acquired | (price as of 2026-10-06) |
| June 27, 2024 | SRRK | A | 18,000 | · | · | 18,000 Direct | · | Acquired | (price as of 2026-10-06) |
| May 17, 2024 | PRME | A | 19,300 | · | · | 38,600 Direct | +100.00% | Acquired | (price as of 2026-10-06) |
| Feb. 21, 2024 | PRME | A | 135,747 | · | · | 135,747 Direct | · | Acquired | (price as of 2026-10-06) |
| April 6, 2023 | SRRK | A | 56,000 | · | · | 56,000 Direct | · | Acquired | (price as of 2026-10-06) |
| March 31, 2023 | PRME | A | 135,747 | · | · | 135,747 Direct | · | Acquired | (price as of 2026-10-06) |
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 |
|---|---|---|---|---|---|---|---|
| June 4, 2026 | SRRK | Stock Option (Right to Buy) | Common Stock | $45.33 | June 4, 2036 | 4,310 | Acquired |
| May 22, 2025 | SRRK | Stock Option (Right to Buy) | Common Stock | $30.46 | May 22, 2035 | 9,206 | Acquired |
| Feb. 27, 2025 | PRME | Stock Option (right to buy) | Common Stock | $2.42 | Feb. 27, 2035 | 225,000 | Acquired |
| Dec. 5, 2024 | PRME | Stock Option (right to buy) | Common Stock | $7.96 | Aug. 4, 2032 | 19,300 | Acquired |
| June 27, 2024 | SRRK | Stock Option (Right to Buy) | Common Stock | $8.36 | June 27, 2034 | 18,000 | Acquired |
| May 17, 2024 | PRME | Stock Option (right to buy) | Common Stock | $7.96 | Aug. 4, 2032 | 19,300 | Acquired |
| Feb. 21, 2024 | PRME | Stock Option (right to buy) | Common Stock | $8.49 | Feb. 21, 2034 | 135,747 | Acquired |
| April 6, 2023 | SRRK | Stock Option (Right to Buy) | Common Stock | $7.85 | April 6, 2033 | 56,000 | Acquired |
| March 31, 2023 | PRME | Stock Option (right to buy) | Common Stock | $12.30 | March 31, 2033 | 135,747 | 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 |
|---|---|---|---|---|
| March 18, 2026 | IFRX | Ordinary Shares | 50,000 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy) | 18,450 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy) | 20,000 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy) | 6,400 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy) | 30,000 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy) | 30,000 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy) | 30,000 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy) | 30,000 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy) | 30,000 | Direct |
| Oct. 19, 2022 | PRME | Stock Option (right to buy) | 167,267 | Direct |
| Oct. 19, 2022 | PRME | Stock Option (right to buy) | 19,300 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2022 | $230,000 | · | · | · | $220,800 | · | · | $1,443,954 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.