Catherine Stehman-Breen
Insider
First SEC filing: July 29, 2021 · Latest: June 9, 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 5, 2026 | DYN | A | 35,152 | · | · | 35,152 Direct | · | Acquired | (price as of 2026-10-02) |
| May 28, 2026 | TNYA | A | 120,000 | · | · | 120,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 30, 2025 | DYN | A | 35,000 | · | · | 35,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 29, 2025 | TNYA | A | 107,400 | · | · | 107,400 Direct | · | Acquired | (price as of 2026-10-02) |
| Oct. 18, 2024 | TNYA | A | 34,000 | · | · | 34,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 22, 2024 | DYN | A | 25,133 | · | · | 25,133 Direct | · | Acquired | (price as of 2026-10-02) |
| June 9, 2023 | TNYA | A | 29,532 | · | · | 29,532 Direct | · | Acquired | (price as of 2026-10-02) |
| May 24, 2023 | DYN | A | 24,900 | · | · | 24,900 Direct | · | Acquired | (price as of 2026-10-02) |
| July 5, 2022 | DYN | A | 7,222 | · | · | 7,222 Direct | · | Acquired | (price as of 2026-10-02) |
| June 10, 2022 | TNYA | A | 39,727 | · | · | 39,727 Direct | · | Acquired | (price as of 2026-10-02) |
| June 3, 2022 | DYN | A | 19,596 | · | · | 19,596 Direct | · | Acquired | (price as of 2026-10-02) |
| May 26, 2021 | DYN | A | 19,596 | · | · | 19,596 Direct | · | Acquired | (price as of 2026-10-02) |
| Sept. 21, 2020 | DYN | C | 35,574 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Sept. 21, 2020 | DYN | C | 10,725 | · | · | 115,713 Direct | +10.22% | Acquired | (price as of 2026-10-02) |
| Aug. 7, 2020 | DYN | P | 35,574 | $2.81 | $99,963 | 35,574 Direct | · | Acquired | 440.9% (price as of 2026-10-02) |
| July 31, 2020 | DYN | A | 14,444 | · | · | 14,444 Direct | · | Acquired | (price as of 2026-10-02) |
| July 31, 2020 | DYN | A | 11,156 | · | · | 11,156 Direct | · | Acquired | (price as of 2026-10-02) |
| April 3, 2017 | SRPT | A | 100,000 | · | · | 100,000 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 |
|---|---|---|---|---|---|---|---|
| June 5, 2026 | DYN | Stock option (right to buy) | Common Stock | $17.04 | June 4, 2036 | 35,152 | Acquired |
| May 28, 2026 | TNYA | Stock Option (Right to buy) | Common Stock | $0.80 | May 27, 2036 | 120,000 | Acquired |
| May 30, 2025 | DYN | Stock option (right to buy) | Common Stock | $11.96 | May 29, 2035 | 35,000 | Acquired |
| May 29, 2025 | TNYA | Stock Option (Right to buy) | Common Stock | $0.44 | May 28, 2035 | 107,400 | Acquired |
| Oct. 18, 2024 | TNYA | Stock Option (Right to buy) | Common Stock | $2.04 | Oct. 17, 2034 | 34,000 | Acquired |
| May 22, 2024 | DYN | Stock option (right to buy) | Common Stock | $31.53 | May 21, 2034 | 25,133 | Acquired |
| June 9, 2023 | TNYA | Stock Option (Right to buy) | Common Stock | $7.12 | June 8, 2033 | 29,532 | Acquired |
| May 24, 2023 | DYN | Stock Option (right to buy) | Common Stock | $13.49 | May 23, 2033 | 24,900 | Acquired |
| July 5, 2022 | DYN | Stock Option (right to buy) | Common Stock | $5.54 | July 30, 2030 | 7,222 | Acquired |
| June 10, 2022 | TNYA | Stock Option (Right to buy) | Common Stock | $5.26 | June 9, 2032 | 39,727 | Acquired |
| June 3, 2022 | DYN | Stock Option (right to buy) | Common Stock | $4.58 | June 2, 2032 | 19,596 | Acquired |
| May 26, 2021 | DYN | Stock Option (right to buy) | Common Stock | $19.56 | May 25, 2031 | 19,596 | Acquired |
| Sept. 21, 2020 | DYN | Series B Preferred Stock | Common Stock | · | · | 35,574 | Disposed |
| Aug. 7, 2020 | DYN | Series B Preferred Stock | Common Stock | · | · | 35,574 | Acquired |
| July 31, 2020 | DYN | Stock Option (right to buy) | Common Stock | $5.54 | July 30, 2030 | 14,444 | Acquired |
| July 31, 2020 | DYN | Stock Option (right to buy) | Common Stock | $5.54 | July 30, 2030 | 11,156 | Acquired |
| April 3, 2017 | SRPT | Stock Option (right to buy) | Common Stock | $29.70 | April 3, 2027 | 100,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 8 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| July 29, 2021 | TNYA | Common Stock | 8,125 | Direct |
| July 29, 2021 | TNYA | Stock Option (Right to Buy) | 21,875 | Direct |
| Sept. 16, 2020 | DYN | Common Stock | 104,988 | Direct |
| Sept. 16, 2020 | DYN | Stock Option (right to buy) | 32,808 | Direct |
| Sept. 16, 2020 | DYN | Stock Option (right to buy) | 11,156 | Direct |
| Sept. 16, 2020 | DYN | Stock Option (right to buy) | 14,444 | Direct |
| Sept. 16, 2020 | DYN | Series B Preferred Stock | 10,725 | Direct |
| April 5, 2017 | SRPT | No Securities Owned | 0 | 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 |
|---|---|---|---|---|---|---|---|---|
| 2017 | $288,173 | · | · | $1,447,210 | · | · | $65,446 | $1,800,829 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.