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Tandem Diabetes Care

Tandem Diabetes Care (NASDAQ: TNDM) insider transactions

In the twelve months to 10 November 2026, executives and directors of Tandem Diabetes Care reported 3 open-market sales of 1,889 shares ($36,911) and 0 open-market purchases, by 2 people, according to the Form 4 filings they submitted to the SEC.

Latest transactions

The 20 most recent transactions in Tandem Diabetes Care shares reported on Form 4
DateInsiderRoleTransactionSharesPriceHeld afterFiling
27 October 2026Twomey Christopher JDirectorOption exercise, 10b5-1 plan+1,700$19.0026,134Form 4
27 October 2026Twomey Christopher JDirectorOpen-market sale, 10b5-1 plan−1,700$19.1524,434Form 4
15 October 2026Kyrillos Jean-ClaudeEVP & Chief Operating OfficerOption exercise+3,637—33,927Form 4
15 October 2026Kyrillos Jean-ClaudeEVP & Chief Operating OfficerShares withheld for tax−1,926$16.5232,001Form 4
15 August 2026Hansen Shannon MarieEVP & Chief Legal OfficerOption exercise+1,097—31,268Form 4
15 August 2026Hansen Shannon MarieEVP & Chief Legal OfficerShares withheld for tax−559$22.7230,709Form 4
15 August 2026Hansen Shannon MarieEVP & Chief Legal OfficerOption exercise+1,917—32,626Form 4
15 August 2026Hansen Shannon MarieEVP & Chief Legal OfficerShares withheld for tax−976$22.7231,650Form 4
15 August 2026Carpenter RickEVP & Chief Technology OfficerOption exercise+897—31,815Form 4
15 August 2026Carpenter RickEVP & Chief Technology OfficerShares withheld for tax−457$22.7231,358Form 4
15 August 2026Carpenter RickEVP & Chief Technology OfficerOption exercise+1,610—32,968Form 4
15 August 2026Carpenter RickEVP & Chief Technology OfficerShares withheld for tax−820$22.7232,148Form 4
15 August 2026Gasser Elizabeth AnneEVP, Chief Strategy OfficerOption exercise+1,097—1,097Form 4
15 August 2026Gasser Elizabeth AnneEVP, Chief Strategy OfficerShares withheld for tax−589$22.72508Form 4
15 August 2026Gasser Elizabeth AnneEVP, Chief Strategy OfficerOption exercise+1,917—2,425Form 4
15 August 2026Gasser Elizabeth AnneEVP, Chief Strategy OfficerShares withheld for tax−1,029$22.721,396Form 4
15 August 2026Kyrillos Jean-ClaudeEVP & Chief Operating OfficerOption exercise+1,010—30,825Form 4
15 August 2026Kyrillos Jean-ClaudeEVP & Chief Operating OfficerShares withheld for tax−535$22.7230,290Form 4
15 August 2026Morrison SusanEVP & Chief Admin. OfficerOption exercise+1,097—51,867Form 4
15 August 2026Morrison SusanEVP & Chief Admin. OfficerShares withheld for tax−314$22.7251,553Form 4

Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.

How to read the table

Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.

Where each row comes from

From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the Tandem Diabetes Care page; the method, in data sources.

Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.