Tandem Diabetes (TNDM) EVP Shannon Hansen Receives RSUs

What Happened

• Shannon M. Hansen, EVP & Chief Legal Officer of Tandem Diabetes Care (TNDM), had RSUs vest and converted (exercise/conversion) into 3,014 shares on 2026-08-15 (two conversions: 1,097 and 1,917 shares at $0.00). To satisfy tax withholding, the issuer withheld 1,535 shares (559 and 976 shares) at $22.72/share, totaling about $34,875. No open-market sale occurred; net increase to her holdings was 1,479 shares.

Key Details

• Transaction date: 2026-08-15. Filing date / Form 4 accession: 2026-08-18 (timely filing).
• Acquired via conversion/exercise (code M): 1,097 and 1,917 shares (total 3,014) at $0.00.
• Tax withholding (code F): 559 and 976 shares withheld at $22.72 each, reported values $12,700 and $22,175 (total ≈ $34,875).
• Net shares added to Hansen’s position: 1,479 shares (3,014 vested − 1,535 withheld).
• Shares are held by the Shannon M. Hansen Trust dated July 8, 2003 (F2).
• The Form notes these were RSU awards under the 2023 Long-Term Incentive Plan (awards from 5/23/2024 and 5/30/2025) with scheduled vesting (see footnotes F3–F7). Each RSU converts to one share or cash at the issuer’s discretion (F4).
• Shares owned after the transaction are not reported on the provided Form 4 excerpt.

Context

• This was not an open-market sale; it’s a routine vesting/settlement of RSUs where the company withheld shares to cover tax obligations (a cashless withholding). That means no cash proceeds to the executive from a sale. Vesting schedules and award dates are disclosed in the footnotes; one-third of each award vested earlier, with remaining portions vesting in quarterly installments per the Plan.