Form 4 for ETON Eton Pharmaceuticals, Inc.
Accepted 2026-05-27 18:28:36 ET · period of report 2026-05-22 · accession 0001437749-26-018628 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-05-27 18:28 | 2026-05-22+ | ETON | Krempa David | Chief Business Off | M - OptEx | $2.32 | +87.8K | 44.9K | New | +$204.1K |
| DM | 2026-05-27 18:28 | 2026-05-22+ | ETON | Krempa David | Chief Business Off | S - Sale+OE | $32.30 | -100.0K | 25.2K | -80% | -$3.23M |
| DM | 2026-05-27 18:28 | 2026-05-22+ | ETON | Krempa David | Chief Business Off | M - OptEx | $0.00 | -87.8K | 118.4K | -43% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-05-22 | M | A | 30,591 | $3.58 | 68,046 | D | — | — | |
| 2 | Common | Common Stock | 2026-05-22 | S | D | 32,963 | $33.22 | 35,083 | D | — | — | (F1) The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. (F7) The shares were sold in multiple trades at prices ranging from $32.67 to $33.65. The price reported above reflects the weighted average sales price. |
| 3 | Common | Common Stock | 2026-05-22 | S | D | 9,315 | $33.88 | 25,768 | D | — | — | (F1) The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. (F2) The shares were sold in multiple trades at prices ranging from $33.68 to $34.66. The price reported above reflects the weighted average sales price. |
| 4 | Common | Common Stock | 2026-05-22 | S | D | 519 | $35.00 | 25,249 | D | — | — | |
| 5 | Common | Common Stock | 2026-05-26 | M | A | 25,000 | $1.38 | 50,249 | D | — | — | |
| 6 | Common | Common Stock | 2026-05-26 | M | A | 12,524 | $1.37 | 62,773 | D | — | — | |
| 7 | Common | Common Stock | 2026-05-26 | S | D | 37,524 | $31.49 | 25,249 | D | — | — | (F1) The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. (F3) The shares were sold in multiple trades at prices ranging from $31.27 to $32.16. The price reported above reflects the weighted average sales price. |
| 8 | Common | Common Stock | 2026-05-27 | M | A | 12,476 | $1.37 | 37,725 | D | — | — | |
| 9 | Common | Common Stock | 2026-05-27 | M | A | 7,203 | $3.58 | 44,928 | D | — | — | |
| 10 | Common | Common Stock | 2026-05-27 | S | D | 19,679 | $31.47 | 25,249 | D | — | — | (F1) The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. (F5) The shares were sold in multiple trades at prices ranging from $31.25 to $31.825. The price reported above reflects the weighted average sales price. |
| 11 | Derivative | Employee Stock Option | 2026-05-22 | M | D | 30,591 | $0.00 | 125,609 | D | $3.58 · 2020-03-12 to 2030-03-11 | 30,591 Common Stock | (F4) The shares subject to the option vested in 48 equal monthly installments from the date of grant (3-12-2020) until fully vested. |
| 12 | Derivative | Employee Stock Option | 2026-05-26 | M | D | 25,000 | $0.00 | 0 | D | $1.38 · 2017-08-07 to 2027-08-06 | 25,000 Common Stock | (F8) The shares subject to option vested annually from the date of grant (8-7-2017) in four equal installments. |
| 13 | Derivative | Employee Stock Option | 2026-05-26 | M | D | 12,524 | $0.00 | 12,476 | D | $1.37 · 2017-11-10 to 2027-11-09 | 12,524 Common Stock | (F6) The shares subject to the option vested annually from the date of grant (11-10-2017) in four equal installments. |
| 14 | Derivative | Employee Stock Option | 2026-05-27 | M | D | 12,476 | $0.00 | 0 | D | $1.37 · 2017-11-10 to 2027-11-09 | 12,476 Common Stock | (F6) The shares subject to the option vested annually from the date of grant (11-10-2017) in four equal installments. |
| 15 | Derivative | Employee Stock Option | 2026-05-27 | M | D | 7,203 | $0.00 | 118,406 | D | $3.58 · 2020-03-12 to 2030-03-11 | 7,203 Common Stock | (F4) The shares subject to the option vested in 48 equal monthly installments from the date of grant (3-12-2020) until fully vested. |