Tandem Diabetes Care, Inc. TNDM

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19.05 USD +1.40 (+7.93%)

At closeNov 4, 2026, 4:39 PM EST

19.05 0.00 0.00%

After hours · Nov 4, 4:39 PM ET

17.83 Day range 19.29

12.26 52-week range 29.65

Held by insiders 1.17%

Held by institutions 116.07%

Float held by institutions 117.44%

Institutions 373

Top institutional holders
Holder	% held	Shares	Value	Reported
Blackrock Inc.	16.65%	11,583,125	220.66M	Jun 29, 2026
Sessa Capital IM, L.P.	7.33%	5,100,000	97.15M	Jun 29, 2026
Vanguard Portfolio Management LLC	6.18%	4,299,667	81.91M	Jun 29, 2026
First Light Asset Management, LLC	4.86%	3,383,553	64.46M	Jun 29, 2026
Vanguard Capital Management LLC	4.45%	3,096,536	58.99M	Jun 29, 2026
State Street Corporation	4.10%	2,851,646	54.32M	Jun 29, 2026

Top mutual fund holders
Holder	% held	Shares	Value	Reported
iShares Trust-iShares Core S&P Small-Cap ETF	5.95%	4,140,278	78.87M	Sep 29, 2026
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund	3.14%	2,186,918	41.66M	Jun 29, 2026
iShares Trust-iShares Russell 2000 ETF	2.59%	1,803,947	34.37M	Sep 29, 2026
VANGUARD INDEX FUNDS-Vanguard Small-Cap Index Fund	2.26%	1,570,019	29.91M	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard Small-Cap Growth Index Fund	1.30%	901,467	17.17M	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard Extended Market Index Fund	1.13%	788,509	15.02M	Jun 29, 2026

TNDM insiders
Insider	Relation	Latest transaction	Date	Shares held
ALLEN DICK P	Retired	Conversion of Exercise of derivative security	May 20, 2026	50,903
BLICKENSTAFF KIM D	Director	Sale	Nov 20, 2024	0
CARPENTER RICK	Chief Technology Officer	Conversion of Exercise of derivative security	Aug 13, 2026	32,148
GASSER ELIZABETH ANNE	Officer	Conversion of Exercise of derivative security	Aug 13, 2026	34,505
HANSEN SHANNON MARIE	Officer	Conversion of Exercise of derivative security	Aug 13, 2026	33,585
MORRISON SUSAN M	Officer	Conversion of Exercise of derivative security	Aug 13, 2026	52,788

Held by funds