TNDM

TANDEM DIABETES CARE INC

Surgical & Medical Instruments & ApparatusNasdaqLarge accelerated filer

Total Trades

Buys

Sells

Largest Trade

$1M+

Insiders

Institutional Funds

213

Inst. Value

$1M+

Activist Filings

Insider Trades

Insider	Title	Type	Value	Shares	Price	Date
Kyrillos Jean-Claude	COO	BUY	$100K–$500K	11K	$18.12	Mar 11, 2025
BLICKENSTAFF KIM D	Director	SELL	$1M+	40K	$31.04	Nov 22, 2024
Novara Mark David	EVP & CHIEF COMMER…	BUY	$1K–$15K	532	$23.24	Nov 19, 2024
Allen Dick	Director	SELL	$100K–$500K	5K	$51.68	Jun 3, 2024
Allen Dick	Director	BUY	$50K–$100K	5K	$18.96	Nov 29, 2023
Vosseller Leigh	EVP & CHIEF FINANC…	BUY	$50K–$100K	6K	$15.39	Nov 13, 2023
Hansen Shannon Marie	Chief Legal Officer	BUY	$15K–$50K	2K	$15.44	Nov 13, 2023
McGroddy-Goetz Kathleen	Director	BUY	$15K–$50K	1K	$21.45	Sep 19, 2023
Allen Dick	Director	BUY	$100K–$500K	10K	$29.47	May 23, 2023
Howell Peyton R	Director	BUY	$50K–$100K	3K	$30.16	May 19, 2023
Vosseller Leigh	EVP & CHIEF FINANC…	BUY	$50K–$100K	3K	$32.77	May 16, 2023
BERGER DAVID B	COO	EXERCISE	$100K–$500K	10K	$18.86	Mar 7, 2023
BERGER DAVID B	COO	SELL	$100K–$500K	10K	$41.19	Mar 7, 2023
BERGER DAVID B	COO	EXERCISE	$100K–$500K	25K	$18.86	Dec 19, 2022
BERGER DAVID B	COO	SELL	$1M+	25K	$40.29	Dec 19, 2022
BERGER DAVID B	COO	SELL	$500K+	10K	$65.02	Jun 10, 2022
BERGER DAVID B	COO	EXERCISE	$100K–$500K	7K	$18.86	Jun 10, 2022
BLICKENSTAFF KIM D	Director	EXERCISE	$1M+	22K	$47.43	May 19, 2022
BLICKENSTAFF KIM D	Director	SELL	$500K+	11K	$92.91	May 19, 2022
Vosseller Leigh	EVP & CHIEF FINANC…	BUY	$100K–$500K	3K	$74.61	May 10, 2022
Sheridan John F	PRESIDENT & CEO	BUY	$100K–$500K	3K	$69.90	May 10, 2022
Howell Peyton R	Director	BUY	$100K–$500K	2K	$74.85	May 10, 2022
TWOMEY CHRISTOPHER J	Director	SELL	$15K–$50K	248	$111.73	May 10, 2022
TWOMEY CHRISTOPHER J	Director	EXERCISE	$15K–$50K	373	$73.73	May 10, 2022
ROBERTSON REBECCA B	Director	EXERCISE	$50K–$100K	2K	$34.00	May 4, 2022
ROBERTSON REBECCA B	Director	SELL	$100K–$500K	2K	$96.73	May 4, 2022
ROBERTSON REBECCA B	Director	EXERCISE	$50K–$100K	2K	$34.00	May 4, 2022
ROBERTSON REBECCA B	Director	SELL	$100K–$500K	2K	$96.73	May 4, 2022
BERGER DAVID B	COO	EXERCISE	$15K–$50K	1K	$18.86	Apr 5, 2022
BERGER DAVID B	COO	SELL	$100K–$500K	1K	$117.88	Apr 5, 2022
BERGER DAVID B	COO	EXERCISE	$50K–$100K	5K	$18.86	Mar 21, 2022
BERGER DAVID B	COO	SELL	$500K+	5K	$108.37	Mar 21, 2022
McGroddy-Goetz Kathleen	Director	SELL	$15K–$50K	405	$106.00	Mar 16, 2022
BERGER DAVID B	COO	SELL	$100K–$500K	1K	$112.68	Mar 3, 2022
BERGER DAVID B	COO	EXERCISE	$15K–$50K	1K	$13.40	Mar 3, 2022
ROBERTSON REBECCA B	Director	SELL	$100K–$500K	2K	$117.97	Feb 3, 2022
ROBERTSON REBECCA B	Director	EXERCISE	$50K–$100K	2K	$34.00	Feb 3, 2022
BERGER DAVID B	EVP	EXERCISE	$15K–$50K	1K	$18.86	Feb 3, 2022
BERGER DAVID B	EVP	SELL	$100K–$500K	1K	$117.91	Feb 3, 2022
BERGER DAVID B	EVP	SELL	$100K–$500K	1K	$149.16	Jan 6, 2022
BERGER DAVID B	EVP	EXERCISE	$15K–$50K	1K	$18.86	Jan 6, 2022

🔓Seeing ranges? Sign in for exact trade values — free forever

Institutional Ownership

13F filings as of Dec 31, 2025 · 213 funds holding

Fund	Shares	Value	Type
ArrowMark Colorado Holdings LLC	2.9M	$1M+	SH
STATE STREET CORP	2.6M	$1M+	SH
GW&K Investment Management, LLC	2.5M	$1M+	SH
Paradice Investment Management LLC	2.1M	$1M+	SH
JENNISON ASSOCIATES LLC	2.0M	$1M+	SH
JACOBS LEVY EQUITY MANAGEMENT, INC	1.7M	$1M+	SH
Freestone Grove Partners LP	1.4M	$1M+	SH
GEODE CAPITAL MANAGEMENT, LLC	1.4M	$1M+	SH
BNP PARIBAS FINANCIAL MARKETS	1.2M	$1M+	SH
Assenagon Asset Management S.A.	1.2M	$1M+	SH
First Light Asset Management, LLC	1.1M	$1M+	SH
BARCLAYS PLC	918K	$1M+	SH
ROYCE & ASSOCIATES LP	650K	$1M+	SH
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	646K	$1M+	SH
Aberdeen Group plc	547K	$1M+	SH
ACADIAN ASSET MANAGEMENT LLC	393K	$1M+	SH
MARSHALL WACE, LLP	342K	$1M+	SH
PRINCIPAL FINANCIAL GROUP INC	320K	$1M+	SH
BAILLIE GIFFORD & CO	295K	$1M+	SH
SECTOR GAMMA AS	267K	$1M+	SH