Gasser Elizabeth Anne 4
4 · TANDEM DIABETES CARE INC · Filed May 19, 2026
Research Summary
AI-generated summary of this filing
Tandem (TNDM) EVP Elizabeth Gasser Exercises RSUs, Buys 1,337 Shares
What Happened
Elizabeth A. Gasser, EVP & Chief Strategy Officer of Tandem Diabetes Care (TNDM), reported multiple May 15, 2026 transactions: she converted/ exercised a total of 10,267 derivative shares (likely RSU/award conversions) and had 5,510 shares withheld to satisfy tax withholding (no open‑market sale). Separately, she purchased 1,337 shares under the company’s ESPP at $10.90/share for $14,573. The withheld shares covered $70,638 of tax liability at $12.82/share. Net new shares to her (converted + ESPP − withheld) = 6,094.
Key Details
- Transaction date: May 15, 2026; Form 4 filed May 19, 2026 (timely).
- Derivative conversions/exercises: 1,503 + 1,097 + 7,667 = 10,267 shares acquired at $0 (conversion).
- Tax withholding: 807 + 589 + 4,114 = 5,510 shares withheld at $12.82 each; total value withheld = $70,638. (Footnote F1: shares withheld by company to satisfy tax withholding; no shares sold.)
- ESPP purchase / other acquisition: 1,337 shares @ $10.90 = $14,573 (footnote F2: ESPP purchase period Nov 18, 2025–May 15, 2026).
- Awards and vest schedules referenced in footnotes: several RSU awards (awarded in 2023–2025) with 33% vesting on applicable May 15 dates and remainder vesting in quarterly installments (see F4–F10).
- Some shares are held in The Gasser Family Trust (footnote F3).
- The filing does not state total shares beneficially owned after these transactions in the excerpt provided.
Context
- The large zero‑price “exercise/conversion” lines reflect conversion/settlement of derivative awards (RSUs/awards) into common stock rather than an open‑market purchase; the withheld shares (F code) were used solely for tax withholding.
- ESPP purchases (reported voluntarily) are straightforward employee purchases and are generally considered a modest bullish signal compared with open‑market insider buys.
- No late filing was indicated; the Form 4 was filed within the SEC’s required timeframe.
Insider Transaction Report
Form 4
Gasser Elizabeth Anne
EVP, Chief Strategy Officer
Transactions
- Exercise/Conversion
Common Stock
2026-05-15+1,503→ 2,569 total - Tax Payment
Common Stock
[F1]2026-05-15$12.82/sh−807$10,346→ 1,762 total - Exercise/Conversion
Common Stock
2026-05-15+1,097→ 2,859 total - Tax Payment
Common Stock
[F1]2026-05-15$12.82/sh−589$7,551→ 2,270 total - Exercise/Conversion
Common Stock
2026-05-15+7,667→ 9,937 total - Tax Payment
Common Stock
[F1]2026-05-15$12.82/sh−4,114$52,741→ 5,823 total - Award
Common Stock
[F2]2026-05-15$10.90/sh+1,337$14,573→ 7,160 total - Exercise/Conversion
Restricted Stock Unit
[F4][F5][F6]2026-05-15−1,503→ 0 total→ Common Stock (1,503 underlying) - Exercise/Conversion
Restricted Stock Unit
[F7][F5][F8]2026-05-15−1,097→ 4,387 total→ Common Stock (1,097 underlying) - Exercise/Conversion
Restricted Stock Unit
[F9][F5][F10]2026-05-15−7,667→ 15,335 total→ Common Stock (7,667 underlying)
Holdings
- 25,949(indirect: See Footnote)
Common Stock
[F3]
Footnotes (10)
- [F1]Shares withheld by Tandem Diabetes Care Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.
- [F10]RSU vest as to thirty-three percent (33%) of the total number of shares subject to the RSU on 5/15/2026, and the remaining shares shall vest in eight (8) equal quarterly installments thereafter.
- [F2]The reporting person is voluntarily reporting the acquisition of shares of common stock pursuant to the Tandem Diabetes Care, Inc. Amended and Restated 2013 Employee Stock Purchase Plan (ESPP), for the ESPP purchase period of November 18, 2025, through May 15, 2026. This transaction is also exempt under Rule 16b-3(c).
- [F3]The securities are held by The Gasser Family Trust dated September 1, 2011, of which Elizabeth A. Gasser is a co-trustee.
- [F4]Awarded on May 25, 2023 pursuant to the Tandem Diabetes Care Inc. 2023 Long-Term Incentive Plan, as amended, and agreements related thereto (the 2023 Plan).
- [F5]Each RSU represents a contingent right to receive either one share of common stock of the Issuer or cash in lieu thereof, at the Issuer's discretion, in accordance with the terms of the 2023 Plan.
- [F6]RSU vest as to thirty-three percent (33%) of the total number of shares subject to the RSU on 5/15/2024, and the remaining shares shall vest in eight (8) equal quarterly installments thereafter.
- [F7]Awarded on May 23, 2024 pursuant to the 2023 Plan.
- [F8]RSU vest as to thirty-three percent (33%) of the total number of shares subject to the RSU on 5/15/2025, and the remaining shares shall vest in eight (8) equal quarterly installments thereafter.
- [F9]Awarded on May 30, 2025 pursuant to the 2023 Plan.
Signature
/s/ Shannon M. Hansen, Attorney-in-Fact for Elizabeth A. Gasser|2026-05-19