Edwin Rock
CIK 1945417 · View on SEC EDGAR ↗
Insider
First SEC filing: Sept. 7, 2022 · Latest: Sept. 7, 2022
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 3 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
3 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Sept. 22, 2023 | CBIO | P | 30,403 | $1.38 | $41,956 | 375,403 Direct | +8.81% | Acquired | -87.4% (price as of 2026-08-19) |
| Sept. 21, 2023 | CBIO | P | 35,000 | $1.38 | $48,300 | 345,000 Direct | +11.29% | Acquired | -87.4% (price as of 2026-08-19) |
| Dec. 22, 2022 | CBIO | P | 110,000 | $2.25 | $247,500 | 310,000 Direct | +55.00% | Acquired | -92.3% (price as of 2026-08-19) |
| Nov. 15, 2022 | CBIO | P | 100,000 | $1.66 | $166,000 | 200,000 Direct | +100.00% | Acquired | -89.5% (price as of 2026-08-19) |
| Nov. 14, 2022 | CBIO | P | 100,000 | $1.43 | $143,000 | 100,000 Direct | — | Acquired | -87.8% (price as of 2026-08-19) |
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 |
|---|---|---|---|---|---|---|---|
| Jan. 12, 2024 | CBIO | Employee Stock Option (right to buy) | Common Stock (250,000) | $3.11 | Jan. 11, 2034 | 250,000 | Acquired |
| Jan. 19, 2023 | CBIO | Employee Stock Option (right to buy) | Common Stock (244,800) | $2.55 | Jan. 18, 2033 | 244,800 | Acquired |
| Sept. 2, 2022 | CBIO | Employee stock option (right to buy) | Common Stock (200,000) | $0.74 | Sept. 1, 2032 | 200,000 | 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 |
|---|---|---|---|---|
| Sept. 7, 2022 | CBIO | No securities beneficially owned | 0 | Direct |