Changes in Beneficial Ownership · 4
Tandem Diabetes Care, Inc.
TNDMNASDAQEQUITYCurrent
Changes in Beneficial Ownership
Structured filing — 4
wk-form4_1787084807.xml
Filing details
- Report period
- 2026-08-15
- Issuer
- TANDEM DIABETES CARE INC
- Issuer CIK
- 0001438133
- Trading symbol
- TNDM
Reporting owner 1
- Name
- Hansen Shannon Marie
- Reporting owner CIK
- 0001908267
- Relationship
- Officer
- Officer title
- EVP & Chief Legal Officer
- Address
- 12400 HIGH BLUFF DRIVE, SAN DIEGO, CA, 92130
Non-derivative transactions
| Security | Transaction date | Code | Amount | A / D | Price (USD) | Owned after | Ownership |
|---|---|---|---|---|---|---|---|
| Common Stock | 2026-08-15 | M · Form 4 | 1,097 | A | 0 | 31,268 | D |
| Common Stock | 2026-08-15 | F · Form 4[F1] | 559 | D | 22.72 | 30,709 | D |
| Common Stock | 2026-08-15 | M · Form 4 | 1,917 | A | 0 | 32,626 | D |
| Common Stock | 2026-08-15 | F · Form 4[F1] | 976 | D | 22.72 | 31,650 | D |
Table key
- M · Form 4
- Exempt derivative exercise or conversion under Rule 16b-3
- A
- Acquired
- D
- Direct
- F · Form 4
- Securities delivered or withheld for exercise price or tax liability under Rule 16b-3
Non-derivative holdings
| Security | Amount owned | Ownership | Nature of ownership |
|---|---|---|---|
| Common Stock | 1,935 | I | Shannon M. Hansen Trust[F2] |
Table key
- I
- Indirect
Derivative transactions
| Security | Conversion / exercise price (USD) | Transaction date | Code | Amount | A / D | Price (USD) | Exercisable | Expires | Underlying security | Underlying shares | Owned after | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock Unit[F3] | [F4] | 2026-08-15 | M · Form 4 | 1,097 | D | 0 | [F5] | [F5] | Common Stock | 1,097 | 3,290 | D |
| Restricted Stock Unit[F6] | [F4] | 2026-08-15 | M · Form 4 | 1,917 | D | 0 | [F7] | [F7] | Common Stock | 1,917 | 13,418 | D |
Table key
- M · Form 4
- Exempt derivative exercise or conversion under Rule 16b-3
- D
- Direct
Footnotes
- F1
- Shares withheld by the Issuer to satisfy tax withholding requirements upon the vesting of restricted stock units (RSUs). No shares were sold.↩ 1↩ 2
- F2
- The securities are held by the Shannon M. Hansen Trust dated July 8, 2003, of which Shannon M. Hansen is the Trustee.↩ 1
- F3
- Awarded on May 23, 2024 pursuant to the Tandem Diabetes Care Inc. 2023 Long-Term Incentive Plan, as amended, and agreements related thereto (the 2023 Plan).↩ 1
- F4
- 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.↩ 1↩ 2
- F5
- One-third of the RSUs granted on May 23, 2024 vested on May 15, 2025, with the remaining RSUs vesting in eight (8) equal quarterly installments thereafter, subject to the terms of the 2023 Plan.↩ 1↩ 2
- F6
- Awarded on May 30, 2025 pursuant to the 2023 Plan.↩ 1
Signature 1
- Signed
- /s/ Jerilyn Laskie, Attorney-in-Fact for Shannon M. Hansen
- Date
- 2026-08-18
Company context
Tandem Diabetes Care, a global insulin delivery and diabetes technology company, manufactures and sells advanced automated insulin delivery systems that reduce the burden of diabetes management, while creating new possibilities for patients, their loved ones, and healthcare providers. The Company’s pump portfolio features the Tandem Mobi system and the t:slim X2 insulin pump, both of which feature Control-IQ+ advanced hybrid closed-loop technology. Tandem Diabetes Care is headquartered in San Diego, California. For more information, visit tandemdiabetes.com.