David D Chang
CIK 1611024 · View on SEC EDGAR ↗
First SEC filing: Oct. 10, 2018 · Latest: Oct. 10, 2018
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 15, 2022 | ALLO | S | 23,648 | $7.65 | $180,907 | 2,289,652 Direct | -1.02% | Disposed | -71.8% (price as of 2026-08-20) |
| March 15, 2021 | ALLO | S | 20,513 | $38.57 | $791,186 | 2,204,417 Direct | -0.92% | Disposed | -94.4% (price as of 2026-08-20) |
| March 16, 2020 | ALLO | S | 1,625 | $20.06 | $32,598 | 2,214,914 Direct | -0.07% | Disposed | -89.3% (price as of 2026-08-20) |
| March 16, 2020 | ALLO | S | 18,710 | $19.24 | $359,980 | 2,215,426 Direct | -0.84% | Disposed | -88.8% (price as of 2026-08-20) |
| Oct. 15, 2018 | ALLO | P | 40,000 | $18.00 | $720,000 | 1,995,625 Direct | +2.05% | Acquired | -88.0% (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 |
|---|---|---|---|---|---|---|---|
| March 23, 2022 | ALLO | Stock Option (Right to Buy) | Common Stock (2,195,512) | $9.69 | March 23, 2032 | 2,195,512 | Acquired |
| May 24, 2021 | ALLO | Stock Option (Right to Buy) | Common Stock (27,410) | $18.22 | March 18, 2030 | 27,410 | Disposed |
| March 26, 2021 | ALLO | Stock Option (Right to Buy) | Common Stock (298,836) | $33.78 | March 26, 2031 | 298,836 | Acquired |
| March 18, 2020 | ALLO | Stock Option (Right to Buy) | Common Stock (568,600) | $18.22 | March 17, 2030 | 568,600 | Acquired |
| March 13, 2019 | ALLO | Employee Stock Option (Right to Buy) | Common Stock (292,700) | $26.89 | March 12, 2029 | 292,700 | Acquired |
| Oct. 15, 2018 | ALLO | Series A Convertible Preferred Stock | Common Stock (29,946) | — | — | 5,704 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Oct. 10, 2018 | ALLO | Common Stock | 1,955,625 | Direct |
| Oct. 10, 2018 | ALLO | Common Stock | 1,071,892 | Indirect |
| Oct. 10, 2018 | ALLO | Common Stock | 848,022 | Indirect |
| Oct. 10, 2018 | ALLO | Common Stock | 848,022 | Indirect |
| Oct. 10, 2018 | ALLO | Series A Convertible Preferred Stock→ Common Stock (29,946) | 29,946 | Indirect |
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 |
|---|---|---|---|---|---|---|---|---|
| 2025 | $724,000 | — | — | — | $400,010 | — | $14,217 | $6,136,093 |
| 2024 | $724,000 | — | — | — | $329,420 | — | $10,145 | $4,482,208 |
| 2023 | $724,000 | — | $7,996,888 | $5,070,365 | $270,595 | — | — | $14,061,848 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.