David M. Chacko
First SEC filing: July 15, 2021 · Latest: July 15, 2021
Insider at
Insider transactions
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 |
|---|---|---|---|---|---|---|---|---|---|
| Jan. 29, 2026 | ERAS | A | 640,000 | · | · | 640,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Dec. 15, 2025 | ERAS | J | 17,793 | $1.19 | $21,174 | 279,980 Direct | +6.79% | Acquired | 1108.8% (price as of 2026-10-05) |
| Feb. 3, 2025 | ERAS | A | 800,000 | · | · | 800,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Dec. 13, 2024 | ERAS | J | 12,324 | $1.56 | $19,225 | 262,187 Direct | +4.93% | Acquired | 822.1% (price as of 2026-10-05) |
| June 20, 2024 | ERAS | A | 278,812 | · | · | 278,812 Direct | · | Acquired | (price as of 2026-10-05) |
| June 14, 2024 | ERAS | J | 3,137 | $1.56 | $4,894 | 262,187 Direct | +1.21% | Acquired | 822.1% (price as of 2026-10-05) |
| Feb. 5, 2024 | ERAS | A | 600,000 | · | · | 600,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Dec. 15, 2023 | ERAS | J | 7,478 | $1.59 | $11,890 | 246,726 Direct | +3.13% | Acquired | 804.7% (price as of 2026-10-05) |
| Feb. 1, 2023 | ERAS | A | 600,000 | · | · | 600,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 1, 2023 | ERAS | J | 2 | $3.89 | $8 | 239,248 Direct | 0.00% | Acquired | 269.8% (price as of 2026-10-05) |
| Feb. 1, 2023 | ERAS | J | 1,748 | $4.10 | $7,167 | 239,248 Direct | +0.74% | Acquired | 250.9% (price as of 2026-10-05) |
| Feb. 1, 2022 | ERAS | A | 366,125 | · | · | 366,125 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 1, 2022 | ERAS | J | 1,562 | $11.60 | $18,119 | 237,498 Direct | +0.66% | Acquired | 24.0% (price as of 2026-10-05) |
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. 29, 2026 | ERAS | Stock option (right to buy) | Common Stock | $10.31 | Jan. 29, 2036 | 640,000 | Acquired |
| Feb. 3, 2025 | ERAS | Stock option (right to buy) | Common Stock | $1.76 | Feb. 2, 2035 | 800,000 | Acquired |
| June 20, 2024 | ERAS | Stock Option (right to buy) | Common Stock | $2.03 | June 19, 2034 | 278,812 | Acquired |
| Feb. 5, 2024 | ERAS | Stock Option (right to buy) | Common Stock | $1.70 | Feb. 4, 2034 | 600,000 | Acquired |
| Feb. 1, 2023 | ERAS | Stock Option (right to buy) | Common Stock | $4.00 | Jan. 31, 2033 | 600,000 | Acquired |
| Feb. 1, 2022 | ERAS | Stock Option (Right to Buy) | Common Stock | $11.54 | Jan. 31, 2032 | 366,125 | Acquired |
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 |
|---|---|---|---|---|
| July 15, 2021 | ERAS | Common Stock | 235,936 | Direct |
| July 15, 2021 | ERAS | Stock Option (Right to Buy) | 455,729 | Direct |
| July 15, 2021 | ERAS | Stock Option (Right to Buy) | 104,166 | Direct |
| July 15, 2021 | ERAS | Stock Option (Right to Buy) | 183,688 | Direct |
| July 15, 2021 | ERAS | Stock Option (Right to Buy) | 153,043 | 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 |
|---|---|---|---|---|---|---|---|---|
| 2025 | $516,700 | · | · | · | $248,016 | · | $10,500 | $1,778,496 |
| 2024 | $492,100 | · | · | · | $226,366 | · | $10,350 | $1,884,506 |
| 2023 | $475,500 | · | · | · | $180,690 | · | $9,900 | $2,433,990 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.