CIK 0001438133 · Large accelerated filer
TANDEM DIABETES CARE INC
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- 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.
Who's trading
90 days
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-05-20 | TWOMEY CHRISTOPHER J Director | Grant or award · Restricted Stock Unit | +10,220 | 10,220 | ||
| 2026-05-20 | Cha Myoungil Director | Grant or award · Restricted Stock Unit | +10,220 | 10,220 | ||
| 2026-05-15 | Carpenter Rick EVP & Chief Technology Officer | Option exercise | +1,437 | 26,711 | ||
| 2026-05-15 | Carpenter Rick EVP & Chief Technology Officer | Shares withheld for taxes | −732 | $12.82 | $9K | 25,979 |
| 2026-05-15 | Carpenter Rick EVP & Chief Technology Officer | Option exercise | +898 | 26,877 | ||
| 2026-05-15 | Carpenter Rick EVP & Chief Technology Officer | Shares withheld for taxes | −457 | $12.82 | $6K | 26,420 |
| 2026-05-15 | Carpenter Rick EVP & Chief Technology Officer | Option exercise | +6,439 | 32,859 | ||
| 2026-05-15 | Carpenter Rick EVP & Chief Technology Officer | Shares withheld for taxes | −3,277 | $12.82 | $42K | 29,582 |
| 2026-05-15 | Carpenter Rick EVP & Chief Technology Officer | Grant or award | +1,336 | $10.90 | $15K | 30,918 |
| 2026-05-15 | Carpenter Rick EVP & Chief Technology Officer | Option exercise · Restricted Stock Unit | −1,437 | 0 | ||
| 2026-05-15 | Carpenter Rick EVP & Chief Technology Officer | Option exercise · Restricted Stock Unit | −898 | 3,589 | ||
| 2026-05-15 | Carpenter Rick EVP & Chief Technology Officer | Option exercise · Restricted Stock Unit | −6,439 | 12,878 | ||
| 2026-05-15 | Gasser Elizabeth Anne EVP, Chief Strategy Officer | Option exercise | +1,503 | 2,569 | ||
| 2026-05-15 | Gasser Elizabeth Anne EVP, Chief Strategy Officer | Shares withheld for taxes | −807 | $12.82 | $10K | 1,762 |
| 2026-05-15 | Gasser Elizabeth Anne EVP, Chief Strategy Officer | Option exercise | +1,097 | 2,859 | ||
| 2026-05-15 | Gasser Elizabeth Anne EVP, Chief Strategy Officer | Shares withheld for taxes | −589 | $12.82 | $8K | 2,270 |
| 2026-05-15 | Gasser Elizabeth Anne EVP, Chief Strategy Officer | Option exercise | +7,667 | 9,937 | ||
| 2026-05-15 | Gasser Elizabeth Anne EVP, Chief Strategy Officer | Shares withheld for taxes | −4,114 | $12.82 | $53K | 5,823 |
| 2026-05-15 | Gasser Elizabeth Anne EVP, Chief Strategy Officer | Grant or award | +1,337 | $10.90 | $15K | 7,160 |
| 2026-05-15 | Gasser Elizabeth Anne EVP, Chief Strategy Officer | Option exercise · Restricted Stock Unit | −1,503 | 0 |
Page 5 of 22 · 432 trades