Corestreet Logo

Tandem Diabetes Care Inc (TNDM) Insider Trading

Total insider buys:
  • $9,279,633.51
Total insider sells:
  • $214,215,215.91
Most recent insider trade:
  • March 7, 2025
Most active insider trader:
  • David B Berger
Trader NameDateTitleAmountPriceTypeTotal Value
Jan. 29, 2020CFO10,000$75.93Sell$759,300.00
Jan. 29, 2020Chairman50,000$75.92Sell$3,796,000.00
Jan. 16, 2020EVP8,000$67.83Sell$542,640.00
Dec. 16, 2019Chairman200,000$59.85Sell$11,970,000.00
Nov. 25, 2019CEO462$70.00Sell$32,340.00
Nov. 25, 2019CFO10,000$70.35Sell$703,500.00
Nov. 18, 2019CFO10,000$65.41Sell$654,100.00
Nov. 4, 2019EVP15,000$62.01Sell$930,150.00
Sept. 6, 2019CEO9,538$70.03Sell$667,946.14
Sept. 3, 2019EVP2,000$72.00Sell$144,000.00
Aug. 29, 2019Chairman100,000$70.96Sell$7,096,000.00
Aug. 28, 2019Director308,297$70.32Sell$21,679,445.04
Aug. 27, 2019EVP6,969$70.00Sell$487,830.00
Aug. 13, 2019Director1,417$63.03Sell$89,313.51
Aug. 12, 2019EVP15,000$62.97Sell$944,550.00
Aug. 5, 2019EVP2,000$62.56Sell$125,120.00
Aug. 5, 2019Director10,000$61.50Sell$615,000.00
Aug. 2, 2019EVP5,000$70.01Sell$350,050.00
Aug. 2, 2019Director9,471$70.01Sell$663,064.71
July 11, 2019EVP13,031$70.04Sell$912,691.24
July 11, 2019Director13,347$70.08Sell$935,357.76
July 3, 2019EVP2,000$63.60Sell$127,200.00
June 13, 2019Director35,688$70.07Sell$2,500,658.16
June 3, 2019EVP2,000$67.76Sell$135,520.00
May 16, 2019CFO10,000$70.45Sell$704,500.00
May 3, 2019CFO10,000$65.14Sell$651,400.00
May 3, 2019EVP2,000$63.09Sell$126,180.00
May 2, 2019Director17,000$61.34Sell$1,042,780.00
April 3, 2019EVP2,000$62.60Sell$125,200.00
March 15, 2019EVP10,000$72.00Sell$720,000.00
March 11, 2019Insider200,000$64.95Sell$12,990,000.00
March 8, 2019Director6,300$62.73Sell$395,199.00
March 1, 2019CAO60,000$67.79Sell$4,067,400.00
Feb. 28, 2019Director10,000$65.39Sell$653,900.00
Feb. 27, 2019EVP20,000$62.03Sell$1,240,600.00
Jan. 25, 2019EVP20,000$45.26Sell$905,200.00
Jan. 15, 2019EVP25,000$41.54Sell$1,038,500.00
Jan. 8, 2019EVP10,000$40.08Sell$400,800.00
Jan. 2, 2019EVP20,788$35.76Sell$743,378.88
Dec. 12, 2018EVP25,000$37.75Sell$943,750.00
Dec. 6, 2018EVP11,493$34.54Sell$396,968.22
Nov. 7, 2018CEO198,000$37.01Sell$7,327,980.00
Nov. 5, 2018Director1,300$37.75Buy$49,075.00
Aug. 3, 2018Director1,754$28.50Buy$49,989.00
March 6, 2018Director25,539$3.88Buy$99,091.32
Feb. 9, 2018CEO750,000$2.00Buy$1,500,000.00
Feb. 9, 2018Director75,000$2.00Buy$150,000.00
Oct. 13, 2017CEO285,700$3.50Buy$999,950.00
March 23, 2017CEO1,600,000$1.25Buy$2,000,000.00
Aug. 1, 2016EVP15,000$6.52Sell$97,800.00
First«3 of 4»Last

  • Insiders are both buying and selling Tandem Diabetes Care Inc stock.

  • The insider traders at Tandem Diabetes Care Inc are: David B Berger, John F Sheridan, Kim D Blickenstaff, Leigh Vosseller, Brian B Hansen, Dick Allen, Christopher J Twomey, James Leal, Susan Morrison, Rebecca B Robertson, Douglas A Roeder, John F. Sheridan, Christopher J. Twomey, Kathleen Mcgroddy-Goetz, Richard P Valencia, Howard E Greene Jr, Elizabeth Anne Gasser, Brian B. Hansen, Jean-Claude Kyrillos, Edward L Cahill, Mark David Novara, Rebecca B. Robertson, Shannon Marie Hansen, and Hlm Venture Partners Ii, L.P.

  • The most active insider trader at Tandem Diabetes Care Inc is David B Berger with 28 trades.

  • Kim D Blickenstaff has sold the most Tandem Diabetes Care Inc stock with a total value of $98,676,435.60.

  • Hlm Venture Partners Ii, L.P. has bought the most Tandem Diabetes Care Inc stock with a total value of $6,000,000.00.

  • The most recent insider trade for Tandem Diabetes Care Inc was on March 7, 2025.

  • The single biggest insider buy for Tandem Diabetes Care Inc was from Hlm Venture Partners Ii, L.P. with a total value of $3,000,000.00 on Nov. 13, 2013.

  • The single biggest insider sell for Tandem Diabetes Care Inc was from Douglas A Roeder with a total value of $21,679,445.04 on Aug. 28, 2019.