John P Byrne
CIK 1998436 · View on SEC EDGAR ↗
Insider
First SEC filing: Oct. 27, 2023 · Latest: Oct. 27, 2023
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 6 non-open-market transactions below
last 12 months, based on the transactions shown below
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 |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 19, 2025 | CRBD | A | 11,390 | — | — | 32,267 Direct | +54.56% | Acquired | (price as of 2026-08-20) |
| Feb. 19, 2025 | CRBD | A | 2,955 | — | — | 25,242 Direct | +13.26% | Acquired | (price as of 2026-08-20) |
| March 4, 2024 | CRBD | F | 856 | $24.50 | $20,972 | 22,287 Direct | -3.70% | Disposed | -10.1% (price as of 2026-08-20) |
| Feb. 20, 2024 | CRBD | A | 20,877 | — | — | 20,877 Direct | — | Acquired | (price as of 2026-08-20) |
| Feb. 20, 2024 | CRBD | A | 11,543 | — | — | 23,143 Direct | +99.51% | Acquired | (price as of 2026-08-20) |
| Jan. 17, 2024 | CRBD | F | 2,045 | $24.17 | $49,428 | 11,600 Direct | -14.99% | Disposed | -8.9% (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 |
|---|---|---|---|---|---|---|---|
| Feb. 19, 2025 | CRBD | Employee Stock Option (Right to Buy) | Common Stock (11,390) | $33.55 | Feb. 19, 2035 | 11,390 | Acquired |
| Feb. 20, 2024 | CRBD | Options (Rights to Buy) | Common Stock (20,877) | $25.34 | Feb. 20, 2034 | 20,877 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 3 holdings
Securities held when first becoming an insider, per SEC Form 3.