Leigh Vosseller

Companies

• Tandem Diabetes Care, Inc.Chief financial officer Jan 2, 2018 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• TDTandem Diabetes Care, Inc. TNDM77,620 shares²$1.3M at $16.23Aug 18, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Aug 15, 2026Shares withheld for tax 942 shares at $22.72 of Tandem Diabetes Care, Inc.²
• Aug 15, 2026Exercised options 2,624 shares of Tandem Diabetes Care, Inc.²
• Aug 15, 2026Shares withheld for tax 537 shares at $22.72 of Tandem Diabetes Care, Inc.²
• Aug 15, 2026Exercised options 1,496 shares of Tandem Diabetes Care, Inc.²
• May 15, 2026Granted 1,336 shares at $10.90 of Tandem Diabetes Care, Inc.³
• May 15, 2026Shares withheld for tax 3,766 shares at $12.82 of Tandem Diabetes Care, Inc.³
• May 15, 2026Exercised options 10,496 shares of Tandem Diabetes Care, Inc.³
• May 15, 2026Shares withheld for tax 537 shares at $12.82 of Tandem Diabetes Care, Inc.³
• May 15, 2026Exercised options 1,496 shares of Tandem Diabetes Care, Inc.³
• May 15, 2026Shares withheld for tax 540 shares at $12.82 of Tandem Diabetes Care, Inc.³
• May 15, 2026Exercised options 1,503 shares of Tandem Diabetes Care, Inc.³
• Feb 17, 2026Shares withheld for tax 616 shares at $18.95 of Tandem Diabetes Care, Inc.⁴
• Feb 17, 2026Exercised options 1,495 shares of Tandem Diabetes Care, Inc.⁴
• Feb 17, 2026Shares withheld for tax 619 shares at $18.95 of Tandem Diabetes Care, Inc.⁴
• Feb 17, 2026Exercised options 1,503 shares of Tandem Diabetes Care, Inc.⁴
• Nov 17, 2025Shares withheld for tax 536 shares at $18.61 of Tandem Diabetes Care, Inc.⁵
• Nov 17, 2025Exercised options 1,496 shares of Tandem Diabetes Care, Inc.⁵
• Nov 17, 2025Shares withheld for tax 538 shares at $18.61 of Tandem Diabetes Care, Inc.⁵
• Nov 17, 2025Exercised options 1,503 shares of Tandem Diabetes Care, Inc.⁵
• Aug 15, 2025Shares withheld for tax 535 shares at $10.82 of Tandem Diabetes Care, Inc.⁶
• Aug 15, 2025Exercised options 1,495 shares of Tandem Diabetes Care, Inc.⁶
• Aug 15, 2025Shares withheld for tax 538 shares at $10.82 of Tandem Diabetes Care, Inc.⁶
• Aug 15, 2025Exercised options 1,503 shares of Tandem Diabetes Care, Inc.⁶
• Aug 8, 2025Bought 13,720 shares at $10.89 of Tandem Diabetes Care, Inc.⁷
• May 15, 2025Shares withheld for tax 2,141 shares at $22.70 of Tandem Diabetes Care, Inc.⁸