Tandem Diabetes director granted 5,110 RSUs

Beaver Sandra reported acquisition or exercise transactions in this Form 4 filing.

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Form Type

Rhea-AI Filing Summary

Beaver Sandra reported acquisition or exercise transactions in this Form 4 filing.

Tandem Diabetes Care Inc. reported that director Sandra Beaver received a grant of 5,110 restricted stock units on May 20, 2026. Each RSU represents a contingent right to one share of common stock or cash, and the award will fully vest on the one-year anniversary of the grant date.

Insider Trade Summary

Grant/Award: 5,110 shares

Grant/Award 1 txn

Insider Beaver Sandra

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Unit	5,110	$0.00	$0.00

Holdings After Transaction: Restricted Stock Unit — 5,110 contracts (Direct)

Footnotes (2)

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).
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.

Key Figures

RSUs granted: 5,110 units Grant price: $0.00 per unit Underlying common shares: 5,110 shares +2 more

5 metrics

RSUs granted 5,110 units Restricted stock units granted on May 20, 2026

Grant price $0.00 per unit Equity award, no cash paid by director

Underlying common shares 5,110 shares Each RSU tied to one share of common stock

Vesting schedule One-year cliff vesting Vests on one-year anniversary of May 20, 2026 grant

Post-grant derivative holdings 5,110 RSUs Total RSUs following the reported transaction

Key Terms

Restricted Stock Unit, 2023 Long-Term Incentive Plan, vest

3 terms

Restricted Stock Unit financial

"Each restricted stock units (RSU) represents a contingent right to receive either one share..."

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.

2023 Long-Term Incentive Plan financial

"in accordance with the terms of the Tandem Diabetes Care, Inc. 2023 Long-Term Incentive Plan..."

vest financial

"Such RSUs were granted to the Reporting Person... and will vest on the one-year anniversary thereof..."

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

FAQ

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What insider transaction did Tandem Diabetes Care (TNDM) report for Sandra Beaver?

Tandem Diabetes Care reported that director Sandra Beaver received 5,110 restricted stock units as an equity award. These units were granted on May 20, 2026 under the company’s 2023 Long-Term Incentive Plan and represent a contingent right to common stock or cash.

How many Tandem Diabetes Care (TNDM) RSUs were granted to Sandra Beaver?

Sandra Beaver was granted 5,110 restricted stock units of Tandem Diabetes Care. The RSUs were awarded at no cash cost per unit and are designed as equity-based compensation, aligning the director’s interests with shareholders through potential future delivery of common stock or cash.

When do Sandra Beaver’s Tandem Diabetes Care (TNDM) RSUs vest?

The 5,110 RSUs granted to Sandra Beaver vest on the one-year anniversary of the May 20, 2026 grant date. Vesting is subject to the terms of Tandem Diabetes Care’s 2023 Long-Term Incentive Plan and any related award agreements governing service conditions.

What does each RSU granted by Tandem Diabetes Care (TNDM) represent?

Each restricted stock unit represents a contingent right to receive either one share of Tandem Diabetes Care common stock or cash in lieu of a share. The choice between stock or cash is at the company’s discretion, following the 2023 Long-Term Incentive Plan terms.

Under which plan were Sandra Beaver’s Tandem Diabetes Care (TNDM) RSUs granted?

The RSUs were granted under the Tandem Diabetes Care, Inc. 2023 Long-Term Incentive Plan, as amended. This plan governs the terms of equity awards, including vesting, settlement in stock or cash, and other conditions applicable to the 5,110 RSUs awarded to Sandra Beaver.

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Accepted by SEC EDGAR 05/22/2026 - 04:10 PM EDT

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Beaver Sandra

(Last)

(First)

(Middle)

12400 HIGH BLUFF DRIVE

(Street)

SAN DIEGO

CALIFORNIA

92130

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
TANDEM DIABETES CARE INC [ TNDM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Unit	⁽¹⁾	05/20/2026		A		5,110		⁽²⁾	⁽²⁾	Common Stock	5,110	$0	5,110	D

Explanation of Responses:

1. 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).

2. 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.

Remarks:

Ex. 24: Power of Attorney

	/s/ Jerilyn Laskie, Attorney-in-Fact for Sandra Beaver	05/22/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR