Form 4 for TNDM TANDEM DIABETES CARE INC
Accepted 2026-05-22 16:04:42 ET · period of report 2026-05-20 · accession 0001438133-26-000072 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-05-22 16:04 | 2026-05-21 | TNDM | Cha Myoungil | Dir | M - OptEx | $0.00 | +8,759 | 22.5K | +64% | $0 |
| D | 2026-05-22 16:04 | 2026-05-20 | TNDM | Cha Myoungil | Dir | A - Grant | $0.00 | +10.2K | 10.2K | New | $0 |
| D | 2026-05-22 16:04 | 2026-05-21 | TNDM | Cha Myoungil | Dir | M - OptEx | $0.00 | -8,759 | 0 | -100% | $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 | 2026-05-21 | M | A | 8,759 | $0.00 | 22,458 | D | — | — | |
| 2 | Derivative | Restricted Stock Unit | 2026-05-20 | A | A | 10,220 | $0.00 | 10,220 | D | — · — to — | 10,220 Common Stock | (F1) Each restricted stock units (RSU) represents a contingent right to receive either one share of the Issuers common stock or cash in lieu thereof, at the Issuers discretion, in accordance with the terms of the Tandem Diabetes Care, Inc. 2023 Long-Term Incentive Plan, as amended, and agreements related thereto (the 2023 Plan). (F2) Such RSUs were granted to the Reporting Person on May 20, 2026, and will vest on the one-year anniversary thereof, subject to the terms of the 2023 Plan. (F2) Such RSUs were granted to the Reporting Person on May 20, 2026, and will vest on the one-year anniversary thereof, subject to the terms of the 2023 Plan. |
| 3 | Derivative | Restricted Stock Unit | 2026-05-21 | M | D | 8,759 | $0.00 | 0 | D | — · — to — | 8,759 Common Stock | (F1) Each restricted stock units (RSU) represents a contingent right to receive either one share of the Issuers common stock or cash in lieu thereof, at the Issuers discretion, in accordance with the terms of the Tandem Diabetes Care, Inc. 2023 Long-Term Incentive Plan, as amended, and agreements related thereto (the 2023 Plan). (F3) On May 21, 2025, the Reporting Person was granted 8,759 RSUs, all of which vested and converted into shares of the Issuers common stock on the one-year anniversary thereof in accordance with the 2023 Plan. (F3) On May 21, 2025, the Reporting Person was granted 8,759 RSUs, all of which vested and converted into shares of the Issuers common stock on the one-year anniversary thereof in accordance with the 2023 Plan. |