TANDEM DIABETES CARE INC (TNDM)

Latest Insider Confidence Score

2026Q1

48.9
Bearish

Company insider confidence (by quarter)

2015Q2 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Blickenstaff Kim D Director 165,190 Nov 22, 2024
Allen Dick Director 31,097 May 27, 2022
Greene Howard E Jr Director 30,000 Aug 6, 2019
Vosseller Leigh CFO 25,580 Nov 19, 2025
Gasser Elizabeth Anne EVP, Chief Strategy Officer 22,949 Nov 19, 2025

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Feb 17, 2026 Feb 19, 2026 Carpenter Rick Chief Technology Officer Sell 46.3 -1,312 -2.55% ✗ $24.9K
Feb 17, 2026 Feb 19, 2026 Gasser Elizabeth Anne EVP, Chief Strategy Officer Sell 46.3 -1,534 -5.26% ✗ $29.1K
Feb 17, 2026 Feb 19, 2026 Morrison Susan EVP & Chief Admin. Officer Sell 46.3 -882 -1.03% ✗ $16.7K
Feb 17, 2026 Feb 19, 2026 Novara Mark David EVP & CHIEF COMMERCIAL OFFICER Sell 52.5 -62 -0.17% ✗ $1.2K
Feb 17, 2026 Feb 19, 2026 Sheridan John F CEO Sell 42.5 -4,363 -1.74% ✗ $82.7K
Feb 17, 2026 Feb 19, 2026 Vosseller Leigh CFO Sell 46.3 -1,235 -1.18% ✗ $23.4K
Feb 17, 2026 Feb 19, 2026 Hansen Shannon Marie EVP & Chief Legal Officer Sell 46.3 -1,263 -1.78% ✗ $23.9K
Jan 15, 2026 Jan 20, 2026 Kyrillos Jean-Claude COO Sell 46.3 -2,118 -8.09% ✗ $44.6K
Dec 15, 2025 Dec 17, 2025 Novara Mark David EVP & CHIEF COMMERCIAL OFFICER Sell 42.5 -3,843 -9.66% ✗ $85K
Dec 15, 2025 Dec 17, 2025 Carpenter Rick Chief Technology Officer Sell 50.0 -207 -0.85% ✗ $4.6K
Dec 4, 2025 Dec 8, 2025 Gasser Elizabeth Anne EVP, Chief Strategy Officer Neutral 52.5 - 0.00% ✗ -
Nov 7, 2025 Nov 25, 2025 Beaver Sandra Director Neutral 52.5 - 0.00% ✗ -
Nov 25, 2025 Beaver Sandra Director Neutral 52.5 - 0.00% ✗ -
Nov 17, 2025 Nov 19, 2025 Morrison Susan EVP & Chief Admin. Officer Sell 48.8 -744 -0.91% ✗ $13.8K
Nov 17, 2025 Nov 19, 2025 Sheridan John F CEO Sell 42.5 -5,817 -2.44% ✗ $108.3K
Nov 17, 2025 Nov 19, 2025 Gasser Elizabeth Anne EVP, Chief Strategy Officer Sell 46.3 -806 -2.60% ✗ $25.9K
Nov 17, 2025 Nov 19, 2025 Carpenter Rick Chief Technology Officer Sell 46.3 -847 -1.19% ✗ $22.1K
Nov 17, 2025 Nov 19, 2025 Novara Mark David EVP & CHIEF COMMERCIAL OFFICER Sell 52.5 -40 -0.12% ✗ $744.4
Nov 17, 2025 Nov 19, 2025 Kyrillos Jean-Claude COO Neutral 67.5 +160 0.71% ✗ -
Nov 17, 2025 Nov 19, 2025 Vosseller Leigh CFO Sell 46.3 -1,074 -1.06% ✗ $20K
Nov 17, 2025 Nov 19, 2025 Hansen Shannon Marie EVP & Chief Legal Officer Sell 51.3 -298 -0.36% ✗ $20.4K
Oct 15, 2025 Oct 17, 2025 Kyrillos Jean-Claude COO Sell 46.3 -1,301 -5.49% ✗ $19.2K
Sep 15, 2025 Sep 16, 2025 Carpenter Rick Chief Technology Officer Sell 50.0 -207 -0.91% ✗ $2.5K
Sep 15, 2025 Sep 16, 2025 Novara Mark David EVP & CHIEF COMMERCIAL OFFICER Sell 46.3 -3,866 -10.68% ✗ $46.7K
Aug 15, 2025 Aug 19, 2025 Novara Mark David EVP & CHIEF COMMERCIAL OFFICER Sell 52.5 -40 -0.14% ✗ $432.8
Aug 15, 2025 Aug 19, 2025 Morrison Susan EVP & Chief Admin. Officer Sell 50.0 -744 -0.95% ✗ $8.1K
Aug 15, 2025 Aug 19, 2025 Sheridan John F CEO Sell 42.5 -5,817 -2.56% ✗ $62.9K
Aug 15, 2025 Aug 19, 2025 Carpenter Rick Chief Technology Officer Sell 46.3 -1,187 -2.61% ✗ $12.8K
Aug 15, 2025 Aug 19, 2025 Vosseller Leigh CFO Sell 46.3 -1,073 -1.10% ✗ $11.6K
Aug 15, 2025 Aug 19, 2025 Hansen Shannon Marie EVP & Chief Legal Officer Sell 46.3 -1,098 -1.93% ✗ $11.9K
Aug 15, 2025 Aug 19, 2025 Gasser Elizabeth Anne EVP, Chief Strategy Officer Sell 46.3 -1,393 -5.31% ✗ $15.1K
Aug 11, 2025 Aug 11, 2025 Sheridan John F CEO Buy 95.0 +10,000 10.38% ✗ $102.3K
Aug 8, 2025 Aug 11, 2025 Vosseller Leigh CFO Buy 95.0 +13,720 30.05% ✗ $149.4K
Jul 15, 2025 Jul 17, 2025 Kyrillos Jean-Claude COO Sell 42.5 -5,205 -20.61% ✗ $79.1K
Jun 16, 2025 Jun 18, 2025 Carpenter Rick Chief Technology Officer Sell 50.0 -207 -0.97% ✗ $4.3K
Jun 16, 2025 Jun 18, 2025 Novara Mark David EVP & CHIEF COMMERCIAL OFFICER Sell 42.5 -3,846 -11.79% ✗ $79.8K
Jun 16, 2025 Jun 18, 2025 Cha Myoungil Director Neutral 52.5 - 0.00% ✗ -
Jun 16, 2025 Jun 18, 2025 Malagueira Joao Paulo Falcao Director Neutral 52.5 - 0.00% ✗ -
May 30, 2025 Jun 5, 2025 Vosseller Leigh CFO Neutral 52.5 - 0.00% ✗ -
May 30, 2025 Jun 5, 2025 Novara Mark David EVP & CHIEF COMMERCIAL OFFICER Neutral 52.5 - 0.00% ✗ -
May 30, 2025 Jun 5, 2025 Kyrillos Jean-Claude COO Neutral 52.5 - 0.00% ✗ -
May 30, 2025 Jun 5, 2025 Morrison Susan EVP & Chief Admin. Officer Neutral 52.5 - 0.00% ✗ -
May 30, 2025 Jun 5, 2025 Hansen Shannon Marie EVP & Chief Legal Officer Neutral 52.5 - 0.00% ✗ -
May 30, 2025 Jun 5, 2025 Sheridan John F CEO Neutral 52.5 - 0.00% ✗ -
May 30, 2025 Jun 5, 2025 Gasser Elizabeth Anne EVP, Chief Strategy Officer Neutral 52.5 - 0.00% ✗ -
May 30, 2025 Jun 5, 2025 Carpenter Rick Chief Technology Officer Neutral 52.5 - 0.00% ✗ -
Jun 2, 2025 Jun 4, 2025 Allen Dick Director Neutral 27.5 -1,000 -4.91% ✗ -
May 29, 2025 Jun 2, 2025 Gasser Elizabeth Anne EVP, Chief Strategy Officer Neutral 52.5 - 0.00% ✗ -
May 22, 2025 May 23, 2025 Sodhi Rajwant Director Neutral 52.5 - 0.00% ✗ -
May 22, 2025 May 23, 2025 McGroddy-Goetz Kathleen Director Neutral 52.5 - 0.00% ✗ -
May 22, 2025 May 23, 2025 Cha Myoungil Director Neutral 52.5 - 0.00% ✗ -
May 22, 2025 May 23, 2025 ROBERTSON REBECCA B Director Neutral 52.5 - 0.00% ✗ -
May 22, 2025 May 23, 2025 Howell Peyton R Director Neutral 52.5 - 0.00% ✗ -
May 22, 2025 May 23, 2025 TWOMEY CHRISTOPHER J Director Neutral 52.5 - 0.00% ✗ -
May 22, 2025 May 23, 2025 Malagueira Joao Paulo Falcao Director Neutral 52.5 - 0.00% ✗ -
May 22, 2025 May 23, 2025 Allen Dick Director Neutral 52.5 - 0.00% ✗ -
May 15, 2025 May 19, 2025 Hansen Shannon Marie EVP & Chief Legal Officer Sell 42.5 -2,275 -4.75% ✗ $51.6K
May 15, 2025 May 19, 2025 Novara Mark David EVP & CHIEF COMMERCIAL OFFICER Sell 77.5 +757 1.53% ✗ $2.6K
May 15, 2025 May 19, 2025 Morrison Susan EVP & Chief Admin. Officer Sell 51.3 -509 -0.30% ✗ $42.4K
May 15, 2025 May 19, 2025 Gasser Elizabeth Anne EVP, Chief Strategy Officer Sell 42.5 -2,349 -3.96% ✗ $79.4K
May 15, 2025 May 19, 2025 Carpenter Rick Chief Technology Officer Sell 46.3 -994 -1.31% ✗ $45.7K
May 15, 2025 May 19, 2025 Sheridan John F CEO Sell 40.0 -15,111 -3.44% ✗ $373.9K
May 15, 2025 May 19, 2025 Kyrillos Jean-Claude COO Neutral 77.5 +171 1.62% ✗ -
May 15, 2025 May 19, 2025 Vosseller Leigh CFO Sell 45.0 -1,548 -0.95% ✗ $66K
Mar 17, 2025 Mar 19, 2025 Novara Mark David EVP & CHIEF COMMERCIAL OFFICER Sell 42.5 -2,739 -10.19% ✗ $52.5K
Mar 17, 2025 Mar 19, 2025 Carpenter Rick Chief Technology Officer Sell 50.0 -146 -0.88% ✗ $2.8K
Mar 7, 2025 Mar 11, 2025 Kyrillos Jean-Claude COO Buy 95.0 +10,538 100.00% ✗ $191K
Feb 25, 2025 Feb 27, 2025 Morrison Susan EVP & Chief Admin. Officer Sell 42.5 -2,027 -3.35% ✗ $67.6K
Feb 25, 2025 Feb 27, 2025 Vosseller Leigh CFO Sell 42.5 -2,521 -3.86% ✗ $84.1K
Feb 25, 2025 Feb 27, 2025 Gasser Elizabeth Anne EVP, Chief Strategy Officer Sell 42.5 -3,748 -13.87% ✗ $125K
Feb 25, 2025 Feb 27, 2025 Sheridan John F CEO Sell 40.0 -13,427 -8.64% ✗ $447.7K
Feb 18, 2025 Feb 20, 2025 Gasser Elizabeth Anne EVP, Chief Strategy Officer Sell 46.3 -1,261 -5.44% ✗ $42.2K
Feb 18, 2025 Feb 20, 2025 Hansen Shannon Marie EVP & Chief Legal Officer Sell 46.3 -810 -2.98% ✗ $27.1K
Feb 18, 2025 Feb 20, 2025 Morrison Susan EVP & Chief Admin. Officer Sell 48.8 -727 -0.94% ✗ $24.3K
Feb 18, 2025 Feb 20, 2025 Sheridan John F CEO Sell 42.5 -3,182 -1.83% ✗ $106.5K
Feb 18, 2025 Feb 20, 2025 Vosseller Leigh CFO Sell 46.3 -880 -1.11% ✗ $29.5K
Feb 18, 2025 Feb 20, 2025 Carpenter Rick Chief Technology Officer Sell 46.3 -836 -2.59% ✗ $28K
Dec 16, 2024 Dec 18, 2024 Novara Mark David EVP & CHIEF COMMERCIAL OFFICER Sell 40.0 -10,732 -35.55% ✗ $350.5K
Dec 16, 2024 Dec 18, 2024 Carpenter Rick Chief Technology Officer Sell 50.0 -145 -0.96% ✗ $4.7K
Nov 20, 2024 Nov 22, 2024 BLICKENSTAFF KIM D Director Sell 17.5 -40,000 -19.49% ✗ $1.2M
Nov 15, 2024 Nov 19, 2024 Novara Mark David EVP & CHIEF COMMERCIAL OFFICER Buy 91.3 +532 100.00% ✗ $12.4K
Nov 15, 2024 Nov 19, 2024 Carpenter Rick Chief Technology Officer Sell 51.3 -163 -0.39% ✗ $19.8K
Nov 15, 2024 Nov 19, 2024 Morrison Susan EVP & Chief Admin. Officer Sell 48.8 -613 -0.84% ✗ $16.8K
Nov 15, 2024 Nov 19, 2024 Hansen Shannon Marie EVP & Chief Legal Officer Sell 51.3 -142 -0.41% ✗ $19.2K
Nov 15, 2024 Nov 19, 2024 Vosseller Leigh CFO Sell 46.3 -765 -1.02% ✗ $20.9K
Nov 15, 2024 Nov 19, 2024 Sheridan John F CEO Sell 42.5 -3,928 -1.84% ✗ $117.8K
Nov 15, 2024 Nov 19, 2024 Gasser Elizabeth Anne EVP, Chief Strategy Officer Sell 46.3 -526 -2.39% ✗ $31.3K
Sep 16, 2024 Sep 18, 2024 Carpenter Rick Chief Technology Officer Sell 47.5 -145 -1.12% ✗ $6.4K
Aug 15, 2024 Aug 19, 2024 Hansen Shannon Marie EVP & Chief Legal Officer Sell 46.3 -703 -3.34% ✗ $30.8K
Aug 15, 2024 Aug 19, 2024 Carpenter Rick Chief Technology Officer Sell 46.3 -726 -2.92% ✗ $31.8K
Aug 15, 2024 Aug 19, 2024 Sheridan John F CEO Sell 42.5 -4,310 -2.93% ✗ $188.9K
Aug 15, 2024 Aug 19, 2024 Gasser Elizabeth Anne EVP, Chief Strategy Officer Sell 46.3 -766 -5.32% ✗ $33.6K
Aug 15, 2024 Aug 19, 2024 Morrison Susan EVP & Chief Admin. Officer Sell 48.8 -613 -0.90% ✗ $26.9K
Aug 15, 2024 Aug 19, 2024 Vosseller Leigh CFO Sell 46.3 -766 -1.08% ✗ $33.6K
Aug 7, 2024 Aug 9, 2024 Allen Dick Director Neutral 27.5 -6,639 -14.95% ✗ -
Jul 15, 2024 Jul 17, 2024 Kyrillos Jean-Claude COO Neutral 52.5 - 0.00% ✗ -
Jun 26, 2024 Kyrillos Jean-Claude COO Neutral 52.5 - 0.00% ✗ -
Jun 17, 2024 Jun 20, 2024 Carpenter Rick Chief Technology Officer Sell 47.5 -145 -1.27% ✗ $6.6K
Jun 17, 2024 Jun 20, 2024 Cha Myoungil Director Neutral 52.5 - 0.00% ✗ -
Jun 17, 2024 Jun 20, 2024 Malagueira Joao Paulo Falcao Director Neutral 52.5 - 0.00% ✗ -