Sandra Beaver - 20 May 2026 Form 4 Insider Report for TANDEM DIABETES CARE INC (TNDM)

Reporting relationship: Director
Issuer ticker: TNDM
Reported as of: 20 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 22 May 2026, 16:10:36 UTC
Prior SEC filing: 25 Nov 2025
Source filing: View source filing
Reporting owner signature: /s/ Jerilyn Laskie, Attorney-in-Fact for Sandra Beaver

Key filing fact

Sandra Beaver filed Form 4 for TANDEM DIABETES CARE INC (TNDM) on 22 May 2026.

Key facts

This page summarizes Sandra Beaver's Form 4 filing for TANDEM DIABETES CARE INC (TNDM).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 22 May 2026, 16:10.

Change

Previous filing in this sequence was filed on 25 Nov 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001944884 Primary reporting owner

Beaver Sandra

Relationship: Director
Address: 12400 HIGH BLUFF DRIVE, SAN DIEGO
Signature: /s/ Jerilyn Laskie, Attorney-in-Fact for Sandra Beaver
Signature date: 22 May 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

TNDM transaction Derivative

Restricted Stock Unit

Award

Transaction value
Shares: +5,110
Change %
Price: $0.000000^*
Shares after: 5,110
Date: 20 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 5,110
Exercise price
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Each restricted stock units (RSU) represents a contingent right to receive either one share of the Issuers common stock or cash in lieu thereof, at the Issuers discretion, in accordance with the terms of the Tandem Diabetes Care, Inc. 2023 Long-Term Incentive Plan, as amended, and agreements related thereto (the 2023 Plan).

Footnote F2

Such RSUs were granted to the Reporting Person on May 20, 2026, and will vest on the one-year anniversary thereof, subject to the terms of the 2023 Plan.

SEC remarks

Ex. 24: Power of Attorney