ArrowMark Colorado Holdings LLC - 30 Sep 2025 SCHEDULE 13G Report for TANDEM DIABETES CARE INC Common Stock, par value $0.001 per share (TNDM)

Filing Manager: ArrowMark Colorado Holdings LLC
Reporting Manager: ArrowMark Colorado Holdings, LLC
Security: TANDEM DIABETES CARE INC Common Stock, par value $0.001 per share
Symbol: TNDM
Shares outstanding: 67,604,359 shares
Disclosed Ownership: 3,691,198 shares
Ownership: 5.5%
Form type: SCHEDULE 13G
Filing time: 13 Nov 2025, 09:01:10 UTC
Date of event: 30 Sep 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
ArrowMark Colorado Holdings, LLC	5.5%	3,691,198	3,691,198	0	Richard Grove	Richard Grove \| Chief Compliance Officer