Tandem Diabetes CFO exercises RSUs, adds to holdings
Tandem Diabetes Care EVP & Chief Financial Officer Leigh Vosseller reported several equity compensation transactions in company stock.
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Form Type
4
Rhea-AI Filing Summary
Tandem Diabetes Care EVP & Chief Financial Officer Leigh Vosseller reported several equity compensation transactions in company stock. On May 15, 2026, she exercised restricted stock units converting a total of 13,495 shares of common stock, and 4,843 shares were withheld by the company to cover tax obligations, with no shares sold. She also acquired 1,336 shares through the company’s Employee Stock Purchase Plan at $10.90 per share. Following these transactions, she directly holds 40,374 shares of common stock and an additional 25,580 shares are held indirectly through the Leigh A. Vosseller Trust.
Insider Trade Summary
13,495 shares exercised/converted
Exercise
11 txns
Insider
Vosseller Leigh
Role
EVP & CHIEF FINANCIAL OFFICER
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Restricted Stock Unit | 1,503 | $0.00 | $0.00 |
| Exercise | Restricted Stock Unit | 1,496 | $0.00 | $0.00 |
| Exercise | Restricted Stock Unit | 10,496 | $0.00 | $0.00 |
| Exercise | Common Stock | 1,503 | $0.00 | $0.00 |
| Exercise Price or Tax Liability | Common Stock | 540 | $12.82 | $7K |
| Exercise | Common Stock | 1,496 | $0.00 | $0.00 |
| Exercise Price or Tax Liability | Common Stock | 537 | $12.82 | $7K |
| Exercise | Common Stock | 10,496 | $0.00 | $0.00 |
| Exercise Price or Tax Liability | Common Stock | 3,766 | $12.82 | $48K |
| Grant/Award | Common Stock | 1,336 | $10.90 | $15K |
| holding | Common Stock | -- | -- | -- |
Holdings After Transaction:
Restricted Stock Unit — 26,974 contracts (Direct);
Common Stock — 49,399 shares (Direct);
Common Stock — 25,580 shares (Indirect, Leigh A. Vosseller Trust)
Footnotes (10)
- F1. Shares withheld by Tandem Diabetes Care Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.
- F2. The reporting person is voluntarily reporting the acquisition of shares of common stock pursuant to the Tandem Diabetes Care, Inc. Amended and Restated 2013 Employee Stock Purchase Plan (ESPP), for the ESPP purchase period of November 18, 2025, through May 15, 2026. This transaction is also exempt under Rule 16b-3(c).
- F3. The securities are held by the Leigh A. Vosseller Trust dated January 17, 2010, of which Leigh Vosseller is the Trustee.
- F4. Awarded on May 25, 2023 pursuant to the Tandem Diabetes Care Inc. 2023 Long-Term Incentive Plan, as amended, and agreements related thereto (the 2023 Plan).
- F5. 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.
- F6. RSU vest as to thirty-three percent (33%) of the total number of shares subject to the RSU on 5/15/2024, and the remaining shares shall vest in eight (8) equal quarterly installments thereafter.
- F7. Awarded on May 23, 2024 pursuant to the 2023 Plan.
- F8. RSU vest as to thirty-three percent (33%) of the total number of shares subject to the RSU on 5/15/2025, and the remaining shares shall vest in eight (8) equal quarterly installments thereafter.
- F9. Awarded on May 30, 2025 pursuant to the 2023 Plan.
- F10. RSU vest as to thirty-three percent (33%) of the total number of shares subject to the RSU on 5/15/2026, and the remaining shares shall vest in eight (8) equal quarterly installments thereafter.
Key Figures
RSU-derived shares: 13,495 shares
Tax withholding shares: 4,843 shares
ESPP purchase: 1,336 shares at $10.90
+4 more
7 metrics
RSU-derived shares
13,495 shares
Common stock from RSU exercises and conversions on May 15, 2026
Tax withholding shares
4,843 shares
Shares withheld by Tandem Diabetes Care to satisfy tax obligations
ESPP purchase
1,336 shares at $10.90
Acquired through Amended and Restated 2013 Employee Stock Purchase Plan
Direct holdings after transactions
40,374 shares
Common stock directly owned by Leigh Vosseller following transactions
Trust holdings
25,580 shares
Common stock held by the Leigh A. Vosseller Trust
RSU exercise batches
10,496; 1,496; 1,503 shares
Three RSU exercises (M-coded) into common stock on May 15, 2026
Tax-withheld batches
3,766; 537; 540 shares
Three F-coded tax withholding dispositions at $12.82 per share
Key Terms
Restricted Stock Unit, Employee Stock Purchase Plan, tax withholding requirements, Rule 16b-3(c), +1 more
5 terms
Restricted Stock Unit financial
"security_title: "Restricted Stock Unit" with derivative exercises into common stock"
A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.
Employee Stock Purchase Plan financial
"acquisition of shares pursuant to the Tandem Diabetes Care, Inc. Amended and Restated 2013 Employee Stock Purchase Plan (ESPP)"
An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.
tax withholding requirements financial
"Shares withheld by Tandem Diabetes Care Inc. to satisfy tax withholding requirements on vesting of RSU"
Rule 16b-3(c) regulatory
"ESPP acquisition is described as exempt under Rule 16b-3(c)"
An SEC rule that lets corporate insiders avoid automatic "short‑swing" profit recovery when they buy or sell their company’s stock under a pre‑approved, written plan that meets specific conditions. For investors, it matters because it clarifies when insider trades are treated as routine, reducing legal uncertainty and helping distinguish trades made for ordinary compensation or pre‑planned reasons from those that might signal opportunistic or timely insider advantage.
Long-Term Incentive Plan financial
"RSU awards granted pursuant to the Tandem Diabetes Care Inc. 2023 Long-Term Incentive Plan"
A long-term incentive plan is a company program that pays executives or employees with stock, options, or cash tied to multi-year performance goals, where the rewards become theirs only after meeting conditions over time. Think of it as a delayed bonus or retirement-style reward that aligns employees’ interests with shareholders by encouraging them to boost long-term value; investors watch these plans because they affect pay costs, share dilution and management incentives.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What insider transactions did TNDM CFO Leigh Vosseller report?
Leigh Vosseller reported equity compensation activity including RSU vesting, tax withholding, and an ESPP purchase. She exercised restricted stock units into 13,495 common shares, with 4,843 shares withheld for taxes, and bought 1,336 shares through the employee stock purchase plan.
What was the size and price of the ESPP purchase reported by TNDM’s CFO?
The Form 4 reports an acquisition of 1,336 shares of Tandem Diabetes Care common stock through the company’s employee stock purchase plan. These ESPP shares were acquired at a purchase price of $10.90 per share for the period ending May 15, 2026.
AI-generated analysis. How Rhea-AI works. Not financial advice.
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