SHERIDAN JOHN F (EVP, CHIEF OPERATING OFFICER) received a stock award from TANDEM DIABETES CARE INC

Compensation award — not an open‑market transaction. Less informative as a directional signal.

A · 1 award

SHERIDAN JOHN F

Filed: 5/19/2026ACC: 0001438133-26-000058

InsiderSHERIDAN JOHN FCIK 1365369

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IssuerTANDEM DIABETES CARE INCCIK 1438133

Officer· EVP, CHIEF OPERATING OFFICER

Since Nov 2018

-23.44K

Net shares

Net seller

$317.6K

Total sold

Open market trades

0B · 0S

Total transactions

52.52K acquired · 75.96K disposed

Non-Derivative Transactions7

Common Stock

Direct

M · Option Exercise

+5.47K

Price / share

—

Trade value

—

% of position

4.4%

5/15/2026

124.69K→130.16K

Common Stock

Direct

F · Tax Withholding

−2.79K

Price / share

$12.82

Trade value

$35.70K

% of position

2.1%

5/15/2026

130.16K→127.38K

Common Stock

Direct

M · Option Exercise

+5.98K

Price / share

—

Trade value

—

% of position

4.7%

5/15/2026

127.38K→133.36K

Common Stock

Direct

F · Tax Withholding

−3.04K

Price / share

$12.82

Trade value

$39.02K

% of position

2.3%

5/15/2026

133.36K→130.32K

Common Stock

Direct

M · Option Exercise

+39.73K

Price / share

—

Trade value

—

% of position

30.5%

5/15/2026

130.32K→170.05K

Common Stock

Direct

F · Tax Withholding

−18.94K

Price / share

$12.82

Trade value

$242.86K

% of position

11.1%

5/15/2026

170.05K→151.11K

Common Stock

Direct

A · Award

+1.34K

Price / share

$10.90

Trade value

$14.56K

% of position

0.9%

5/15/2026

151.11K→152.44K

Total

Net shares

+27.75K

Net value

-$303.03K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	5/15/2026	M · Option Exercise	+5.47K	—	—	4.4%	124.69K	130.16K
Common Stock Direct	5/15/2026	F · Tax Withholding	−2.79K	$12.82	$35.70K	2.1%	130.16K	127.38K
Common Stock Direct	5/15/2026	M · Option Exercise	+5.98K	—	—	4.7%	127.38K	133.36K
Common Stock Direct	5/15/2026	F · Tax Withholding	−3.04K	$12.82	$39.02K	2.3%	133.36K	130.32K
Common Stock Direct	5/15/2026	M · Option Exercise	+39.73K	—	—	30.5%	130.32K	170.05K
Common Stock Direct	5/15/2026	F · Tax Withholding	−18.94K	$12.82	$242.86K	11.1%	170.05K	151.11K
Common Stock Direct	5/15/2026	A · Award	+1.34K	$10.90	$14.56K	0.9%	151.11K	152.44K
Total			+27.75K		-$303.03K

Derivative Transactions3

Restricted Stock Unit

Direct

M · Option Exercise

Converts to

Common Stock

5.47K shares

−5.47K

Strike price

Held after

0.00

Exercisable

—

5/15/2026

Restricted Stock Unit

Direct

M · Option Exercise

Converts to

Common Stock

5.98K shares

−5.98K

Strike price

Held after

23.93K

Exercisable

—

5/15/2026

Restricted Stock Unit

Direct

M · Option Exercise

Converts to

Common Stock

39.73K shares

−39.73K

Strike price

Held after

79.47K

Exercisable

—

5/15/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Unit Direct	Common Stock5.47K shares	5/15/2026	M · Option Exercise	−5.47K	—	0.00
Restricted Stock Unit Direct	Common Stock5.98K shares	5/15/2026	M · Option Exercise	−5.98K	—	23.93K
Restricted Stock Unit Direct	Common Stock39.73K shares	5/15/2026	M · Option Exercise	−39.73K	—	79.47K