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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
2025-05-15 Gasser Elizabeth Anne EVP, Chief Strategy Officer Option exercise +1,503 9,968
2025-05-15 Gasser Elizabeth Anne EVP, Chief Strategy Officer Shares withheld for taxes −805 $22.70 $18K 9,163
2025-05-15 Gasser Elizabeth Anne EVP, Chief Strategy Officer Option exercise +4,387 13,550
2025-05-15 Gasser Elizabeth Anne EVP, Chief Strategy Officer Shares withheld for taxes −2,350 $22.70 $53K 11,200
2025-05-15 Gasser Elizabeth Anne EVP, Chief Strategy Officer Option exercise · Restricted Stock Unit −162 0
2025-05-15 Gasser Elizabeth Anne EVP, Chief Strategy Officer Option exercise · Restricted Stock Unit −474 0
2025-05-15 Gasser Elizabeth Anne EVP, Chief Strategy Officer Option exercise · Restricted Stock Unit −1,503 6,012
2025-05-15 Gasser Elizabeth Anne EVP, Chief Strategy Officer Option exercise · Restricted Stock Unit −4,387 8,774
2025-05-15 Carpenter Rick Chief Technology Officer Grant or award +1,020 $15.64 $16K 17,412
2025-05-15 Carpenter Rick Chief Technology Officer Option exercise +596 18,008
2025-05-15 Carpenter Rick Chief Technology Officer Shares withheld for taxes −214 $22.70 $5K 17,794
2025-05-15 Carpenter Rick Chief Technology Officer Option exercise +1,437 19,231
2025-05-15 Carpenter Rick Chief Technology Officer Shares withheld for taxes −515 $22.70 $12K 18,716
2025-05-15 Carpenter Rick Chief Technology Officer Option exercise +3,589 22,305
2025-05-15 Carpenter Rick Chief Technology Officer Shares withheld for taxes −1,285 $22.70 $29K 21,020
2025-05-15 Carpenter Rick Chief Technology Officer Option exercise · Restricted Stock Unit −596 0
2025-05-15 Carpenter Rick Chief Technology Officer Option exercise · Restricted Stock Unit −1,437 5,748
2025-05-15 Carpenter Rick Chief Technology Officer Option exercise · Restricted Stock Unit −3,589 7,179
2025-05-15 Sheridan John F PRESIDENT & CEO Grant or award +1,359 $15.64 $21K 80,368
2025-05-15 Sheridan John F PRESIDENT & CEO Option exercise +792 81,160

Page 21 of 22 · 432 trades