Tandem Diabetes Care EVP granted 29,136 RSUs

Morrison Susan reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Morrison Susan reported acquisition or exercise transactions in this Form 4 filing.

Tandem Diabetes Care executive Susan Morrison received a grant of 29,136 restricted stock units as part of equity compensation. Each RSU represents a right to receive one share of common stock or cash under the company’s 2023 Long-Term Incentive Plan. One-third of the RSUs will vest on May 29, 2027, with the remaining units vesting in eight equal quarterly installments on the 15th of the month thereafter, contingent on plan terms and continued service. Following this award, Morrison holds 29,136 RSUs directly.

Insider Trade Summary

Grant/Award: 29,136 shares

Grant/Award 1 txn

Insider Morrison Susan

Role EVP & Chief Admin. Officer

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Unit	29,136	$0.00	$0.00

Holdings After Transaction: Restricted Stock Unit — 29,136 contracts (Direct)

Footnotes (2)

1. F1. Each restricted stock unit (RSU) represents a contingent right to receive either one share of the Issuer's common stock or cash in lieu thereof, at the Issuer's 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. F2. One-third of such RSUs shall vest on 5/29/2027, and the remaining RSUs shall vest in eight (8) equal quarterly installments on the 15th of the month thereafter subject to the terms of the 2023 Plan.

Key Figures

RSU grant size: 29,136 units RSUs after grant: 29,136 units Initial vesting date: May 29, 2027 +1 more

4 metrics

RSU grant size 29,136 units Restricted stock units granted May 29, 2026

RSUs after grant 29,136 units Total RSUs held following the reported transaction

Initial vesting date May 29, 2027 One-third of RSUs vest on this date

Remaining vesting pattern 8 quarterly installments Residual RSUs vest quarterly on the 15th of the month

Key Terms

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

4 terms

Restricted Stock Unit financial

"Each restricted stock unit (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, as amended..."

vest financial

"One-third of such RSUs shall vest on 5/29/2027, and the remaining RSUs shall vest in eight..."

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.

contingent right financial

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

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Tandem Diabetes Care (TNDM) report for Susan Morrison?

Tandem Diabetes Care reported that executive Susan Morrison received 29,136 restricted stock units as an equity award. The RSUs are granted at no cost under the company’s 2023 Long-Term Incentive Plan and settle in common stock or cash at the company’s discretion.

How many restricted stock units did Susan Morrison receive from Tandem Diabetes Care (TNDM)?

Susan Morrison received 29,136 restricted stock units. These RSUs represent a right to receive an equal number of Tandem Diabetes Care common shares or cash, subject to vesting and the terms of the 2023 Long-Term Incentive Plan and related award agreements.

What is the vesting schedule for Susan Morrison’s 29,136 Tandem Diabetes Care RSUs?

One-third of Susan Morrison’s 29,136 RSUs will vest on May 29, 2027. The remaining RSUs vest in eight equal quarterly installments on the 15th of the month thereafter, subject to the conditions of Tandem Diabetes Care’s 2023 Long-Term Incentive Plan.

Does the Susan Morrison Form 4 for Tandem Diabetes Care (TNDM) show any share sales?

The Form 4 shows no share sales by Susan Morrison. It reports a grant of 29,136 restricted stock units classified as an acquisition (grant or award) and does not include any sale, tax withholding, or gift transactions in this filing.

What plan governs Susan Morrison’s new RSU award at Tandem Diabetes Care (TNDM)?

The RSU award is governed by Tandem Diabetes Care’s 2023 Long-Term Incentive Plan, as amended. The filing notes that settlement of each RSU into stock or cash and the vesting terms are determined according to this plan and the related award agreements.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/02/2026 - 04:20 PM EDT Learn about SEC filing dates

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^*

Morrison Susan

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & Chief Admin. Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/29/2026

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)
			Code	V	Amount	(A) or (D)	Price

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit	(1)	05/29/2026		A		29,136		(2)	(2)	Common Stock	29,136	$0	29,136	D

Explanation of Responses:

1. Each restricted stock unit (RSU) represents a contingent right to receive either one share of the Issuer's common stock or cash in lieu thereof, at the Issuer's 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. One-third of such RSUs shall vest on 5/29/2027, and the remaining RSUs shall vest in eight (8) equal quarterly installments on the 15th of the month thereafter subject to the terms of the 2023 Plan.

Remarks:

Ex. 24: Power of Attorney

	/s/ Jerilyn Laskie, Attorney-in-Fact for Susan M. Morrison	06/02/2026
	** 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)