Timothy R Pearson
Insider
First SEC filing: June 11, 2026 · Latest: June 11, 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 10, 2026 | KRRO | A | 14,677 | · | · | 14,677 Direct | · | Acquired | (price as of 2026-10-05) |
| June 11, 2025 | KRRO | A | 6,010 | · | · | 6,010 Direct | · | Acquired | (price as of 2026-10-05) |
| June 11, 2024 | KRRO | A | 5,190 | · | · | 5,190 Direct | · | Acquired | (price as of 2026-10-05) |
| May 1, 2024 | CBIO | A | 40,000 | · | · | 40,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Nov. 3, 2023 | KRRO | A | 16,000 | · | · | 16,000 Direct | · | Acquired | (price as of 2026-10-05) |
| May 19, 2023 | CBIO | A | 35,000 | · | · | 35,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Nov. 11, 2022 | CBIO | P | 19,400 | $1.29 | $25,026 | 24,650 Direct | +369.52% | Acquired | -89.2% (price as of 2026-10-05) |
| May 18, 2022 | CBIO | A | 21,000 | · | · | 21,000 Direct | · | Acquired | (price as of 2026-10-05) |
| May 18, 2021 | CBIO | A | 10,500 | · | · | 10,500 Direct | · | Acquired | (price as of 2026-10-05) |
| May 18, 2021 | CBIO | A | 5,250 | · | · | 5,250 Direct | · | Acquired | (price as of 2026-10-05) |
| May 22, 2020 | CBIO | A | 21,000 | · | · | 21,000 Direct | · | Acquired | (price as of 2026-10-05) |
| May 17, 2019 | CBIO | A | 21,000 | · | · | 21,000 Direct | · | Acquired | (price as of 2026-10-05) |
| May 18, 2018 | CBIO | A | 11,000 | · | · | 11,000 Direct | · | Acquired | (price as of 2026-10-05) |
| May 25, 2017 | CBIO | A | 11,000 | · | · | 11,000 Direct | · | Acquired | (price as of 2026-10-05) |
| May 17, 2016 | CBIO | A | 11,000 | · | · | 11,000 Direct | · | Acquired | (price as of 2026-10-05) |
| May 17, 2016 | CBIO | A | 11,000 | · | · | 11,000 Direct | · | Acquired | (price as of 2026-10-05) |
| July 15, 2015 | CBIO | A | 11,000 | · | · | 11,000 Direct | · | Acquired | (price as of 2026-10-05) |
| March 31, 2014 | CBIO | A | 15,401 | · | · | 15,401 Direct | · | Acquired | (price as of 2026-10-05) |
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 10, 2026 | KRRO | Stock Option (Right to Buy) | Common Stock | $10.59 | June 9, 2036 | 14,677 | Acquired |
| June 11, 2025 | KRRO | Stock Option (Right to Buy) | Common Stock | $14.87 | June 10, 2035 | 6,010 | Acquired |
| June 11, 2024 | KRRO | Stock Option (Right to Buy) | Common Stock | $42.19 | June 10, 2034 | 5,190 | Acquired |
| May 1, 2024 | CBIO | Stock Option (right to buy) | Common Stock | $1.62 | April 30, 2034 | 40,000 | Acquired |
| Nov. 3, 2023 | KRRO | Stock Option (Right to Buy) | Common Stock | $14.98 | Nov. 2, 2033 | 16,000 | Acquired |
| May 19, 2023 | CBIO | Stock Option (right to buy) | Common Stock | $1.98 | May 18, 2033 | 35,000 | Acquired |
| May 18, 2022 | CBIO | Stock Option (right to buy) | Common Stock | $0.60 | May 17, 2032 | 21,000 | Acquired |
| May 18, 2021 | CBIO | Stock Option (right to buy) | Common Stock | $2.55 | May 17, 2031 | 10,500 | Acquired |
| May 22, 2020 | CBIO | Stock Option (right to buy) | Common Stock | $3.00 | May 21, 2030 | 21,000 | Acquired |
| May 17, 2019 | CBIO | Common Stock | Common Stock | $12.39 | May 16, 2029 | 21,000 | Acquired |
| May 18, 2018 | CBIO | Stock Option (right to buy) | Common Stock | $18.41 | May 17, 2028 | 11,000 | Acquired |
| May 25, 2017 | CBIO | Stock Option (right to buy) | Common Stock | $13.89 | May 24, 2027 | 11,000 | Acquired |
| May 17, 2016 | CBIO | Stock Option (right to buy) | Common Stock | $6.35 | May 16, 2026 | 11,000 | Acquired |
| May 17, 2016 | CBIO | Stock Option (right to buy) | Common Stock | $6.35 | May 16, 2026 | 11,000 | Acquired |
| July 15, 2015 | CBIO | Stock Option (right to buy) | Common Stock | $7.50 | July 14, 2025 | 11,000 | Acquired |
| March 31, 2014 | CBIO | Stock Option (right to buy) | Common Stock | $16.33 | March 31, 2024 | 15,401 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| April 1, 2014 | CBIO | No securities beneficially owned | 0 | Direct |