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CIK 0001438133 · Large accelerated filer

TANDEM DIABETES CARE INC

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Ticker
TNDM
Exchange
Nasdaq
Industry
Surgical & Medical Instruments & Apparatus
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
204327508
Phone
858-366-6900
Business address
12400 HIGH BLUFF DRIVE, San Diego, CA, 92130
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$32,555
in 1 filing, $33K under 10b5-1 plans

Net −$32,555. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. TWOMEY CHRISTOPHER J −$33K Director sold 7% of stake

Reading 100 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2026-02-17 Novara Mark David EVP & CHIEF COMMERCIAL OFFICER Option exercise · Restricted Stock Unit −77 380
2026-02-17 Sheridan John F PRESIDENT & CEO Option exercise +5,471 123,071
2026-02-17 Sheridan John F PRESIDENT & CEO Shares withheld for taxes −1,963 $18.95 $37K 121,108
2026-02-17 Sheridan John F PRESIDENT & CEO Option exercise +5,983 127,091
2026-02-17 Sheridan John F PRESIDENT & CEO Shares withheld for taxes −2,400 $18.95 $45K 124,691
2026-02-17 Sheridan John F PRESIDENT & CEO Option exercise · Restricted Stock Unit −5,471 5,472
2026-02-17 Sheridan John F PRESIDENT & CEO Option exercise · Restricted Stock Unit −5,983 29,911
2026-02-17 Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER Option exercise +1,503 39,151
2026-02-17 Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER Shares withheld for taxes −619 $18.95 $12K 38,532
2026-02-17 Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER Option exercise +1,495 40,027
2026-02-17 Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER Shares withheld for taxes −616 $18.95 $12K 39,411
2026-02-17 Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER Option exercise · Restricted Stock Unit −1,503 1,503
2026-02-17 Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER Option exercise · Restricted Stock Unit −1,495 7,478
2026-02-17 Hansen Shannon Marie EVP & Chief Legal Officer Option exercise +531 22,005
2026-02-17 Hansen Shannon Marie EVP & Chief Legal Officer Shares withheld for taxes −219 $18.95 $4K 21,786
2026-02-17 Hansen Shannon Marie EVP & Chief Legal Officer Option exercise +1,437 23,223
2026-02-17 Hansen Shannon Marie EVP & Chief Legal Officer Shares withheld for taxes −592 $18.95 $11K 22,631
2026-02-17 Hansen Shannon Marie EVP & Chief Legal Officer Option exercise +1,097 23,728
2026-02-17 Hansen Shannon Marie EVP & Chief Legal Officer Shares withheld for taxes −452 $18.95 $9K 23,276
2026-02-17 Hansen Shannon Marie EVP & Chief Legal Officer Option exercise · Restricted Stock Unit −531 0

Page 10 of 22 · 432 trades