TANDEM DIABETES CARE INC (TNDM) Institutional Ownership and Insiders Activity

TANDEM DIABETES CARE INC (TNDM) is widely held by institutional investors, with 264 firms reporting positions valued at approximately $1.19B based on SEC Form 13F filings for the quarter ended June 30, 2026.

Blackrock, Inc. is the largest disclosed holder, reporting approximately $174.79M in TNDM holdings in its latest filing.

Recent insider activity includes 28 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.