Tandem Diabetes Care Inc

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Tandem Diabetes Care Inc
TickerTNDM
CIK #0001438133
CUSIP875372104
SectorLife Sciences - Surgical & Medical Instruments & Apparatus
Address11045 Roselle Street Suite 200, San Diego, CA 92121
Source [EDGAR]
Reg D Offering (Form D) Filed Raised Terms
Tandem Diabetes Care Inc 2012-09-11 36.4 M Exemption: 506 · Remaining: $13,612,075 · Duration: One year or less · Revenue: Decline to Disclose
CIK Filing 2011 - 2026
[0001438133] 10-K
[0001438133] 10-Q
[0001438133] 3
[0001438133] 4
[0001438133] 8-K
[0001438133] D
[0001438133] SC 13D
[0001438133] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Voya Financial Inc Tandem Diabetes Care Inc [2026-05-05] 0.0
Vanguard Capital Management LLC Tandem Diabetes Care Inc [2026-04-30] 0.0
Vanguard Portfolio Management LLC Tandem Diabetes Care Inc [2026-04-29] 0.0
ArrowMark Colorado Holdings LLC Tandem Diabetes Care Inc [2025-11-13] 0.0
Sessa Capital Master LP Tandem Diabetes Care Inc [2025-05-15] 0.0
Eminence Capital LP Tandem Diabetes Care Inc [2024-02-14] 7.9
BlackRock Inc Tandem Diabetes Care Inc [2023-01-24] 9.9
Capital World Investors Tandem Diabetes Care Inc [2021-02-16] 5.1
Jackson Square Partners LLC Tandem Diabetes Care Inc [2021-02-09] 5.12
FMR LLC Tandem Diabetes Care Inc [2020-05-11] 0.0
Wellington Management Group LLP Tandem Diabetes Care Inc [2020-01-28] 5.15
Vanguard Group Inc Tandem Diabetes Care Inc [2019-02-12] 9.87
BlackRock Inc Tandem Diabetes Care Inc [2019-02-08] 7.3
Alger Associates Inc Tandem Diabetes Care Inc [2019-02-08] 5.55
Flynn James E Tandem Diabetes Care Inc [2018-06-11] 5.54
Dexcom Inc Tandem Diabetes Care Inc [2018-02-23] 5.6
Corrib Capital Management LP Tandem Diabetes Care Inc [2018-02-16] 5.2
First Light Asset Management LLC Tandem Diabetes Care Inc [2018-02-16] 10.08
Alyeska Investment Group LP Tandem Diabetes Care Inc [2018-02-14] 0.4
Intracoastal Capital LLC Tandem Diabetes Care Inc [2017-10-26] 4.1
Armistice Capital LLC Tandem Diabetes Care Inc [2017-10-23] 4.99
Empery Asset Management LP Tandem Diabetes Care Inc [2017-10-20] 5.63
Sabby Management LLC Tandem Diabetes Care Inc [2017-10-16] 5.63
BlackRock Inc Tandem Diabetes Care Inc [2016-01-28] 5.0
Franklin Resources Inc Tandem Diabetes Care Inc [2015-02-10] 7.6
Wasatch Advisors Inc Tandem Diabetes Care Inc [2014-02-13] 5.7
TPG Group Holdings SBS Advisors Inc Tandem Diabetes Care Inc [2014-02-13] 12.8
Domain Parters VII L P Tandem Diabetes Care Inc [2014-02-06] 15.2
JPMorgan Chase & Co Tandem Diabetes Care Inc [2014-02-04] 5.2
Blickenstaff Kim D Tandem Diabetes Care Inc [2013-11-26] 6.92
HLM Venture Partners II LP Tandem Diabetes Care Inc [2013-11-26] 7.6
Delphi Ventures VIII LP Tandem Diabetes Care Inc [2013-11-25] 16.1
Form 3/4/5 Filer 2011 - 2026
Gasser Elizabeth Anne
Tandem Diabetes Care Inc
Vosseller Leigh
Kyrillos Jean-Claude
Sheridan John F
Carpenter Rick
Hansen Shannon Marie
Morrison Susan
Howell Peyton R
Allen Dick
Malagueira Joao Paulo Falcao
Beaver Sandra
Sodhi Rajwant
McGroddy-Goetz Kathleen
Robertson Rebecca B
Twomey Christopher J
Cha Myoungil
Novara Mark David
Blickenstaff Kim D
Leal James
Berger David B
Hansen Brian B
Roeder Douglas A
Cahill Edward L
Greene Howard E Jr
Valencia Richard P
Cohen Fred E
Cajigas John
Treu Jesse I
Anhalt Henry
Smith Lonnie M
Anacone Robert
GRUA Peter J
Ray Russell T
HLM Venture Associates II LLC
HLM Venture Partners II LP
Douglass David L
Delphi BioInvestments VIII LP
Delphi Ventures VIII LP
Bochnowski James J
Pakianathan Deepika
Delphi Management Partners VIII LLC
TPG Group Holdings SBS Advisors Inc
Bonderman David
Coulter James G
Schoemaker Kathleen K
Domain Parters VII L P
Vitullo Nicole
Dovey Brian H
Halak Brian K
DP VII Associates LP
Blair James C
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Novara Mark David
Common Stock
2026-03-17 Sell 187 $23.05 4,310
Novara Mark David
Common Stock
2026-03-16 Tax withheld 5,540 $21.59 119,609
Novara Mark David
Restricted Stock Unit · derivative
2026-03-16 Option exercise 7,414 $0.00
Novara Mark David
Common Stock
2026-03-16 Option exercise 7,414 $0.00
Novara Mark David
Common Stock
2026-03-05 Sell 2 $22.81 46
Sheridan John F
Common Stock
2026-02-17 Tax withheld 2,400 $18.95 45,480
Gasser Elizabeth Anne
Common Stock
2026-02-17 Tax withheld 647 $18.95 12,261
Vosseller Leigh
Common Stock
2026-02-17 Option exercise 1,495 $0.00
Morrison Susan
Common Stock
2026-02-17 Option exercise 1,503 $0.00
Gasser Elizabeth Anne
Restricted Stock Unit · derivative
2026-02-17 Option exercise 1,503 $0.00
Hansen Shannon Marie
Restricted Stock Unit · derivative
2026-02-17 Option exercise 1,097 $0.00
Novara Mark David
Common Stock
2026-02-17 Option exercise 77 $0.00
Morrison Susan
Common Stock
2026-02-17 Tax withheld 372 $18.95 7,049
Morrison Susan
Common Stock
2026-02-17 Tax withheld 510 $18.95 9,664
Hansen Shannon Marie
Common Stock
2026-02-17 Tax withheld 452 $18.95 8,565
Hansen Shannon Marie
Restricted Stock Unit · derivative
2026-02-17 Option exercise 1,437 $0.00
Sheridan John F
Restricted Stock Unit · derivative
2026-02-17 Option exercise 5,983 $0.00
Vosseller Leigh
Common Stock
2026-02-17 Tax withheld 616 $18.95 11,673
Sheridan John F
Restricted Stock Unit · derivative
2026-02-17 Option exercise 5,471 $0.00
Vosseller Leigh
Common Stock
2026-02-17 Option exercise 1,503 $0.00
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 275 81,381,396
2025-12-31 270 74,821,293
2025-09-30 258 74,793,873
2025-06-30 272 80,261,775
2025-03-31 277 72,769,985
2024-12-31 318 72,699,459
2024-09-30 336 74,880,913
2024-06-30 320 75,269,471
2024-03-31 294 78,702,387
2023-12-31 273 71,337,711
2023-09-30 227 64,624,340
2023-06-30 248 67,187,380
Form 13F Holdings
Firm Period DFND Voting Shares
Y-Intercept Hong Kong Ltd [2026-06-30] SOLE 314,653 314,653
Louisiana State Employees Retirement System [2026-06-30] SOLE 30,100 30,100
Alaska Retirement Management Board [2026-06-30] SOLE 26,721 26,721
Wealth Enhancement Advisory Services LLC [2026-06-30] SOLE 3,837 26,438
Assenagon Asset Management SA [2026-06-30] SOLE 26,430 26,430
180 Wealth Advisors LLC [2026-06-30] SOLE 11,181 24,934
Yousif Capital Management LLC [2026-06-30] SOLE 4,512 18,505
Commonwealth of Pennsylvania Public School Empls Retrmt SYS [2026-06-30] SOLE 16,251 16,251
Redhawk Wealth Advisors Inc [2026-06-30] SOLE 0 13,731
Farther Finance Advisors LLC [2026-06-30] SOLE 0 2,863
Gamma Investing LLC [2026-06-30] DFND 1,644 1,644
First Horizon Corp [2026-06-30] DFND 303 1,270
Corecap Advisors LLC [2026-06-30] SOLE 0 1,164
Salem Investment Counselors Inc [2026-06-30] SOLE 1,000 1,000
MassMutual Private Wealth & Trust FSB [2026-06-30] SOLE 707 707
First Horizon Corp [2026-06-30] OTR 0 369
Versant Capital Management Inc [2026-06-30] SOLE 328 328
True Wealth Design LLC [2026-06-30] SOLE 0 205
IFP Advisors LLC [2026-06-30] SOLE 164 164
Toth Financial Advisory Corp [2026-06-30] SOLE 0 100
Fortitude Family Office LLC [2026-06-30] SOLE 70 70
Elevation Wealth Partners LLC [2026-06-30] SOLE 0 60
Ritter Daniher Financial Advisory LLC / DE [2026-06-30] SOLE 0 50
Farmers & Merchants Investments Inc [2026-06-30] SOLE 50 50
Eastern Bank [2026-06-30] SOLE 32 32
JFS Wealth Advisors LLC [2026-06-30] SOLE 0 24
Aventura Private Wealth LLC [2026-06-30] SOLE 16 16
Cedar Mountain Advisors LLC [2026-06-30] SOLE 0 12
Davis Capital Management [2026-06-30] SOLE 4 4
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