Richard Brudnick
CIK 1692359 · View on SEC EDGAR ↗
First SEC filing: March 18, 2026 · Latest: June 8, 2026
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
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 |
|---|---|---|---|---|---|---|---|---|---|
| June 4, 2026 | SRRK | A | 4,310 | — | — | 4,310 Direct | — | Acquired | (price as of 2026-08-20) |
| June 4, 2026 | SRRK | A | 6,839 | — | — | 21,896 Direct | +45.42% | Acquired | (price as of 2026-08-20) |
| May 22, 2025 | SRRK | A | 9,206 | — | — | 9,206 Direct | — | Acquired | (price as of 2026-08-20) |
| May 22, 2025 | SRRK | A | 7,632 | — | — | 21,132 Direct | +56.53% | Acquired | (price as of 2026-08-20) |
| April 6, 2023 | SRRK | A | 56,000 | — | — | 56,000 Direct | — | Acquired | (price as of 2026-08-20) |
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 (4,310) | $45.33 | June 4, 2036 | 4,310 | Acquired |
| May 22, 2025 | SRRK | Stock Option (Right to Buy) | Common Stock (9,206) | $30.46 | May 22, 2035 | 9,206 | Acquired |
| April 6, 2023 | SRRK | Stock Option (Right to Buy) | Common Stock (56,000) | $7.85 | April 6, 2033 | 56,000 | 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 |
|---|---|---|---|---|
| March 18, 2026 | IFRX | Ordinary Shares | 50,000 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy)→ Ordinary Shares (18,450) | 18,450 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy)→ Ordinary Shares (20,000) | 20,000 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy)→ Ordinary Shares (6,400) | 6,400 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy)→ Ordinary Shares (30,000) | 30,000 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy)→ Ordinary Shares (30,000) | 30,000 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy)→ Ordinary Shares (30,000) | 30,000 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy)→ Ordinary Shares (30,000) | 30,000 | Direct |
| March 18, 2026 | IFRX | Stock Option (Right to Buy)→ Ordinary Shares (30,000) | 30,000 | Direct |
| Oct. 19, 2022 | PRME | Stock Option (right to buy)→ Common Stock (167,267) | 167,267 | Direct |
| Oct. 19, 2022 | PRME | Stock Option (right to buy)→ Common Stock (19,300) | 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.