TNDM
Tandem Diabetes Care, Inc.
NASDAQ · Healthcare · Medical - Devices · US
$19.90
−2.59%0
Insider buys (3m)
0
Insider sells (3m)
$0.00
Net value (3m)
+3.7%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Aug 18, 2026 | Kyrillos Jean-Claude · officer: EVP & Chief Operating Officer | M-Exempt | 1,010 | $0.00 |
| Aug 18, 2026 | Sheridan John F · director, officer: PRESIDENT & CEO | F-InKind | 5,055 | $23 |
| Aug 18, 2026 | Morrison Susan · officer: EVP & Chief Admin. Officer | M-Exempt | 1,730 | $0.00 |
| Aug 18, 2026 | Sheridan John F · director, officer: PRESIDENT & CEO | F-InKind | 3,044 | $23 |
| Aug 18, 2026 | Hansen Shannon Marie · officer: EVP & Chief Legal Officer | M-Exempt | 1,097 | $0.00 |
| Aug 18, 2026 | Morrison Susan · officer: EVP & Chief Admin. Officer | M-Exempt | 1,097 | $0.00 |
| Aug 18, 2026 | Morrison Susan · officer: EVP & Chief Admin. Officer | F-InKind | 495 | $23 |
| Aug 18, 2026 | Hansen Shannon Marie · officer: EVP & Chief Legal Officer | F-InKind | 559 | $23 |
| Aug 18, 2026 | Gasser Elizabeth Anne · officer: EVP, Chief Strategy Officer | M-Exempt | 1,097 | $0.00 |
| Aug 18, 2026 | Hansen Shannon Marie · officer: EVP & Chief Legal Officer | F-InKind | 976 | $23 |
| Aug 18, 2026 | Morrison Susan · officer: EVP & Chief Admin. Officer | F-InKind | 314 | $23 |
| Aug 18, 2026 | Hansen Shannon Marie · officer: EVP & Chief Legal Officer | M-Exempt | 1,917 | $0.00 |
| Aug 18, 2026 | Carpenter Rick · officer: EVP & Chief Technology Officer | F-InKind | 820 | $23 |
| Aug 18, 2026 | Gasser Elizabeth Anne · officer: EVP, Chief Strategy Officer | M-Exempt | 1,917 | $0.00 |
| Aug 18, 2026 | Carpenter Rick · officer: EVP & Chief Technology Officer | F-InKind | 457 | $23 |
| Aug 18, 2026 | Sheridan John F · director, officer: PRESIDENT & CEO | M-Exempt | 5,982 | $0.00 |
| Aug 18, 2026 | Vosseller Leigh · officer: EVP & CHIEF FINANCIAL OFFICER | F-InKind | 537 | $23 |
| Aug 18, 2026 | Gasser Elizabeth Anne · officer: EVP, Chief Strategy Officer | F-InKind | 1,029 | $23 |
| Aug 18, 2026 | Vosseller Leigh · officer: EVP & CHIEF FINANCIAL OFFICER | F-InKind | 942 | $23 |
| Aug 18, 2026 | Vosseller Leigh · officer: EVP & CHIEF FINANCIAL OFFICER | M-Exempt | 1,496 | $0.00 |
| Aug 18, 2026 | Sheridan John F · director, officer: PRESIDENT & CEO | M-Exempt | 9,934 | $0.00 |
| Aug 18, 2026 | Carpenter Rick · officer: EVP & Chief Technology Officer | M-Exempt | 1,610 | $0.00 |
| Aug 18, 2026 | Kyrillos Jean-Claude · officer: EVP & Chief Operating Officer | F-InKind | 535 | $23 |
| Aug 18, 2026 | Vosseller Leigh · officer: EVP & CHIEF FINANCIAL OFFICER | M-Exempt | 2,624 | $0.00 |
| Aug 18, 2026 | Carpenter Rick · officer: EVP & Chief Technology Officer | M-Exempt | 897 | $0.00 |
| Aug 18, 2026 | Gasser Elizabeth Anne · officer: EVP, Chief Strategy Officer | F-InKind | 589 | $23 |
| Jul 17, 2026 | Kyrillos Jean-Claude · officer: EVP & Chief Operating Officer | F-InKind | 1,926 | $15 |
| Jul 17, 2026 | Kyrillos Jean-Claude · officer: EVP & Chief Operating Officer | M-Exempt | 3,636 | $0.00 |
| Jun 2, 2026 | Morrison Susan · officer: EVP & Chief Admin. Officer | A-Award | 29,136 | $0.00 |
| Jun 2, 2026 | Kyrillos Jean-Claude · officer: EVP & Chief Operating Officer | A-Award | 29,136 | $0.00 |
Institutional positioning
13F filings over the trailing two quarters
New 94Increased 193Reduced 188Sold out 47
| Filer | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 11,583,125 | Aug 7, 2026 |
| BLACKROCK, INC. | Reduced | 10,690,844 | May 13, 2026 |
| UBS GROUP AG | Increased | 7,226,371 | May 5, 2026 |
| UBS Group AG | Reduced | 6,325,150 | Aug 13, 2026 |
| Sessa Capital IM, L.P. | Increased | 5,100,000 | Aug 14, 2026 |
| SESSA CAPITAL IM, L.P. | Reduced | 4,730,757 | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 4,299,667 | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 3,993,333 | May 8, 2026 |
| First Light Asset Management, LLC | Increased | 3,383,553 | Aug 14, 2026 |
| ARROWMARK COLORADO HOLDINGS LLC | Increased | 3,103,609 | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 3,096,536 | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 3,038,919 | May 15, 2026 |
| STATE STREET CORP | Increased | 2,851,646 | Aug 7, 2026 |
| GW&K INVESTMENT MANAGEMENT, LLC | Increased | 2,689,106 | May 13, 2026 |
| STATE STREET CORP | Increased | 2,662,260 | May 15, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Aug 18, 2026