Ran Zheng
CIK 1885914 · View on SEC EDGAR ↗
Insider
First SEC filing: Dec. 21, 2021 · Latest: Dec. 21, 2021
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 2 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 |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 20, 2021 | CRBU | A | 13,750 | — | — | 13,750 Direct | — | Acquired | (price as of 2026-08-21) |
| Oct. 1, 2021 | CRBU | A | 44,000 | — | — | 44,000 Direct | — | Acquired | (price as of 2026-08-21) |
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 |
|---|---|---|---|---|---|---|---|
| Dec. 20, 2021 | CRBU | Option to purchase Common Stock | Common Stock (13,750) | $15.16 | Dec. 19, 2031 | 13,750 | Acquired |
| Oct. 1, 2021 | CRBU | Stock Option (right to buy) | Common Stock (44,000) | $22.31 | Sept. 30, 2031 | 44,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).