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Insider Trading Arrangements
 3 Months Ended 12 Months Ended
Dec. 31, 2023
shares
Dec. 31, 2023
shares
Trading Arrangements, by Individual    
Material Terms of Trading Arrangement  
During the three months ended December 31, 2023, the following Section 16 officers and directors adopted or terminated a “Rule 10b5-1 trading arrangement” (as defined in Item 408 of Regulation S-K of the Exchange Act):
NameTitle
Action
Action Date
Aggregate Number of Shares to be Sold(1)
Expiration Date(2)
Matthew Dolan
Executive Vice President, Strategy, Corporate Development and Dexcom LabsAdoption12/15/2023
15,326
12/15/2024
Paul Flynn
Executive Vice President, Global RevenueAdoption12/15/2023
31,253
12/15/2024
Girish Naganathan
Executive Vice President, Chief Technology OfficerAdoption11/20/2023
5,137
11/20/2024
Steven R. Pacelli
Executive Vice President and Managing Director, Dexcom VenturesAdoption11/27/2023
15,000
1/23/2025
Barry J. Regan
Executive Vice President, Global OperationsAdoption12/4/2023
28,430
12/4/2024
Kevin R. Sayer
Chairperson, President and Chief Executive OfficerAdoption12/12/2023
100,965
12/12/2024
Sadie M. Stern
Executive Vice President, Chief Human Resources Officer
Adoption(3)
12/12/2023
12,825
3/11/2025
Sadie M. Stern
Executive Vice President, Chief Human Resources Officer
Termination(3)
12/12/2023
4,708
3/8/2024
Jereme M. Sylvain
Executive Vice President, Chief Financial OfficerAdoption11/21/2023
6,863
11/21/2024
(1) The actual number of shares sold may depend on the net shares vested as a result of tax withholding obligations, the vesting of certain performance-based stock units, the number of shares purchased under employee stock purchase plans, one or more limit orders, as applicable, and therefore, may not be determinable at this time.
(2) Except as indicated by footnote, each trading arrangement permitted or permits transactions through and including the date listed in the table.
(3) Represents the modification, as described in Rule 10b5-1(c)(1)(iv) under the Exchange Act, of a written plan adopted on December 12, 2023 that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c), as then in effect, under the Exchange Act.
Each of the Rule 10b5-1 trading arrangements that were adopted in the above table are in accordance with our insider trading policy and actual sale transactions made pursuant to such trading arrangements will be disclosed publicly in Section 16 filings with the SEC in accordance with applicable securities laws, rules and regulations.
Non-Rule 10b5-1 Arrangement Adopted false  
Non-Rule 10b5-1 Arrangement Terminated false  
Matthew Dolan [Member]    
Trading Arrangements, by Individual    
Name Matthew Dolan  
Title Executive Vice President, Strategy, Corporate Development and Dexcom Labs  
Rule 10b5-1 Arrangement Adopted true  
Adoption Date 12/15/2023  
Arrangement Duration 366 days  
Aggregate Available 15,326 15,326
Paul Flynn [Member]    
Trading Arrangements, by Individual    
Name Paul Flynn  
Title Executive Vice President, Global Revenue  
Rule 10b5-1 Arrangement Adopted true  
Adoption Date 12/15/2023  
Arrangement Duration 366 days  
Aggregate Available 31,253 31,253
Girish Naganathan [Member]    
Trading Arrangements, by Individual    
Name Girish Naganathan  
Title Executive Vice President, Chief Technology Officer  
Rule 10b5-1 Arrangement Adopted true  
Adoption Date 11/20/2023  
Arrangement Duration 366 days  
Aggregate Available 5,137 5,137
Steven R. Pacelli [Member]    
Trading Arrangements, by Individual    
Name Steven R. Pacelli  
Title Executive Vice President and Managing Director, Dexcom Ventures  
Rule 10b5-1 Arrangement Adopted true  
Adoption Date 11/27/2023  
Arrangement Duration 423 days  
Aggregate Available 15,000 15,000
Barry J. Regan [Member]    
Trading Arrangements, by Individual    
Name Barry J. Regan  
Title Executive Vice President, Global Operations  
Rule 10b5-1 Arrangement Adopted true  
Adoption Date 12/4/2023  
Arrangement Duration 366 days  
Aggregate Available 28,430 28,430
Kevin R. Sayer [Member]    
Trading Arrangements, by Individual    
Name Kevin R. Sayer  
Title Chairperson, President and Chief Executive Officer  
Rule 10b5-1 Arrangement Adopted true  
Adoption Date 12/12/2023  
Arrangement Duration 366 days  
Aggregate Available 100,965 100,965
Sadie M. Stern [Member]    
Trading Arrangements, by Individual    
Arrangement Duration 455 days  
Jereme M. Sylvain [Member]    
Trading Arrangements, by Individual    
Name Jereme M. Sylvain  
Title Executive Vice President, Chief Financial Officer  
Rule 10b5-1 Arrangement Adopted true  
Adoption Date 11/21/2023  
Arrangement Duration 366 days  
Aggregate Available 6,863 6,863
Sadie M Stern December 2023 Plan [Member] | Sadie M. Stern [Member]    
Trading Arrangements, by Individual    
Name Sadie M. Stern  
Title Executive Vice President, Chief Human Resources Officer  
Rule 10b5-1 Arrangement Adopted true  
Adoption Date 12/12/2023  
Aggregate Available 12,825 12,825
Sadie M Stern 2023 Plan Termination [Member] | Sadie M. Stern [Member]    
Trading Arrangements, by Individual    
Name Sadie M. Stern  
Title Executive Vice President, Chief Human Resources Officer  
Rule 10b5-1 Arrangement Terminated true  
Termination Date 12/12/2023  
Aggregate Available 4,708 4,708