Donald Marvin
CIK 1891264 · View on SEC EDGAR ↗
First SEC filing: Nov. 12, 2021 · Latest: Nov. 12, 2021
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
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 |
|---|---|---|---|---|---|---|---|---|---|
| March 16, 2022 | CMMB | P | 250 | $3.25 | $812 | 2,000 Direct | +14.29% | Acquired | -83.9% (price as of 2026-08-20) |
| March 16, 2022 | CMMB | P | 250 | $3.30 | $825 | 1,750 Direct | +16.67% | Acquired | -84.1% (price as of 2026-08-20) |
| March 14, 2022 | CMMB | P | 250 | $4.20 | $1,050 | 1,500 Direct | +20.00% | Acquired | -87.5% (price as of 2026-08-20) |
| March 14, 2022 | CMMB | P | 250 | $4.10 | $1,025 | 1,250 Direct | +25.00% | Acquired | -87.2% (price as of 2026-08-20) |
| March 14, 2022 | CMMB | P | 250 | $3.90 | $975 | 1,000 Direct | +33.33% | Acquired | -86.6% (price as of 2026-08-20) |
| March 14, 2022 | CMMB | P | 250 | $3.98 | $995 | 500 Direct | +100.00% | Acquired | -86.8% (price as of 2026-08-20) |
| March 14, 2022 | CMMB | P | 250 | $4.00 | $1,000 | 250 Direct | — | Acquired | -86.9% (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 |
|---|---|---|---|---|---|---|---|
| Nov. 8, 2021 | CMMB | Option to Purchase American Depositary Shares [F2] | American Depositary Shares [F1] (196,875) | $9.77 | Nov. 8, 2021 | 196,875 | Acquired |
| Nov. 8, 2021 | CMMB | Option to Purchase American Depositary Shares [F2] | American Depositary Shares [F1] (196,875) | $9.77 | Nov. 8, 2021 | 196,875 | 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 |
|---|---|---|---|---|
| Nov. 12, 2021 | CMMB | Option to Purchase American Depositary Shares [F1]→ American Depositary Shares [F1] (196,875) | 196,875 | 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 |
|---|---|---|---|---|---|---|---|---|
| 2020 | — | — | — | — | — | — | — | — |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.