Sadie Stern

CIK: 0001797971

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)12 (57.1%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)5 (23.8%)

Compensation grants

Other (G, F, J, C, D, …)4 (19.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

DXCM

DEXCOM INC

Officer

Discretionary Trading P&L

Holdings

Transaction History (21 total)

DXCM
DEXCOM INC
Oct 27, 2026
Sale(S)
Direct
2.6K shares at avg. $78.62$202K
DXCM
DEXCOM INC
Sep 28, 2026
Sale(S)
Direct
2.6K shares at avg. $86.15$221K
DXCM
DEXCOM INC
Aug 27, 2026
Sale(S)
Direct
2.6K shares at avg. $88.37$227K
DXCM
DEXCOM INC
Aug 22, 2026
Tax Payment(F)
Direct
1.5K shares at avg. $92.34$134K
DXCM
DEXCOM INC
May 22, 2026
Tax Payment(F)
Direct
1.5K shares at avg. $71.90$104K
DXCM
DEXCOM INC
Mar 8, 2026
Award(A)
Direct
39K shares-
DXCM
DEXCOM INC
Mar 8, 2026
Tax Payment(F)
Direct
17.2K shares at avg. $68.10$1.2M
DXCM
DEXCOM INC
Jan 29, 2026
Tax Payment(F)
Direct
2.7K shares at avg. $73.36$195K
DXCM
DEXCOM INC
Jan 29, 2026
Award(A)
Direct
7.1K shares-
DXCM
DEXCOM INC
Sep 4, 2025
Sale(S)
Direct
1.5K shares at avg. $80.00$117K
DXCM
DEXCOM INC
Jul 28, 2025
Sale(S)
Direct
1.5K shares at avg. $88.99$130K
DXCM
DEXCOM INC
Jun 26, 2025
Sale(S)
Direct
1.5K shares at avg. $85.06$125K
DXCM
DEXCOM INC
May 27, 2025
Sale(S)
Direct
6.2K shares at avg. $85.11$526K
DXCM
DEXCOM INC
Mar 12, 2025
Sale(S)
Direct
11.2K shares at avg. $70.38$787K
DXCM
DEXCOM INC
Mar 8, 2025
Award(A)
Direct
29.9K shares-
DXCM
DEXCOM INC
Mar 8, 2025
Award(A)
Direct
22.8K shares-
DXCM
DEXCOM INC
Jan 29, 2025
Sale(S)
Direct
2.1K shares at avg. $86.91$182K
DXCM
DEXCOM INC
Jan 28, 2025
Award(A)
Direct
5.6K shares-
DXCM
DEXCOM INC
Dec 16, 2024
Sale(S)
Direct
424 shares at avg. $76.87$33K
DXCM
DEXCOM INC
Nov 20, 2024
Sale(S)
Direct
4.3K shares at avg. $74.73$318K
DXCM
DEXCOM INC
Sep 9, 2024
Sale(S)
Direct
426 shares at avg. $69.15$29K

		Type	Shares	Price		Ownership
Oct 27, 2026	DXCM DEXCOM INC	Sale(S)	2,565	$78.62	$201,660	Direct
Sep 28, 2026	DXCM DEXCOM INC	Sale(S)	2,565	$86.15	$220,975	Direct
Aug 27, 2026	DXCM DEXCOM INC	Sale(S)	2,565	$88.37	$226,669	Direct
Aug 22, 2026	DXCM DEXCOM INC	Tax Payment(F)	1,451	$92.34	$133,985	Direct
May 22, 2026	DXCM DEXCOM INC	Tax Payment(F)	1,451	$71.90	$104,327	Direct
Mar 8, 2026	DXCM DEXCOM INC	Award(A)	39,019	-	$0	Direct
Mar 8, 2026	DXCM DEXCOM INC	Tax Payment(F)	17,199	$68.10	$1,171,252	Direct
Jan 29, 2026	DXCM DEXCOM INC	Tax Payment(F)	2,656	$73.36	$194,844	Direct
Jan 29, 2026	DXCM DEXCOM INC	Award(A)	7,123	-	$0	Direct
Sep 4, 2025	DXCM DEXCOM INC	Sale(S)	1,466	$80.00	$117,280	Direct
Jul 28, 2025	DXCM DEXCOM INC	Sale(S)	1,466	$88.99	$130,459	Direct
Jun 26, 2025	DXCM DEXCOM INC	Sale(S)	1,466	$85.06	$124,698	Direct
May 27, 2025	DXCM DEXCOM INC	Sale(S)	6,184	$85.11	$526,318	Direct
Mar 12, 2025	DXCM DEXCOM INC	Sale(S)	11,176	$70.38	$786,568	Direct
Mar 8, 2025	DXCM DEXCOM INC	Award(A)	29,922	-	-	Direct
Mar 8, 2025	DXCM DEXCOM INC	Award(A)	22,798	-	-	Direct
Jan 29, 2025	DXCM DEXCOM INC	Sale(S)	2,093	$86.91	$181,911	Direct
Jan 28, 2025	DXCM DEXCOM INC	Award(A)	5,586	-	$0	Direct
Dec 16, 2024	DXCM DEXCOM INC	Sale(S)	424	$76.87	$32,593	Direct
Nov 20, 2024	DXCM DEXCOM INC	Sale(S)	4,259	$74.73	$318,275	Direct
Sep 9, 2024	DXCM DEXCOM INC	Sale(S)	426	$69.15	$29,458	Direct

1-21 of 21 transactions

About Stern Sadie

Stern Sadie (SEC CIK 0001797971) files insider reports with the SEC as EVP Chief People & Culture Off of DEXCOM INC (DXCM).

Signal8 holds 17 ownership filings by Stern Sadie, all Form 4s, filed between Sep 11, 2024 and Oct 28, 2026. Those filings report 21 transactions, from Sep 9, 2024 to Oct 27, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Stern Sadie's filings is in SAN DIEGO, CA.

Recent filings by Stern Sadie

Oct 27, 2026: Open-market sale of DXCM shares (Form 4, code S).
Sep 28, 2026: Open-market sale of DXCM shares (Form 4, code S).
Aug 27, 2026: Open-market sale of DXCM shares (Form 4, code S).
Aug 22, 2026: Tax withholding of DXCM shares (Form 4, code F).
May 22, 2026: Tax withholding of DXCM shares (Form 4, code F).

Other insiders filing for DEXCOM INC (DXCM)

Ashley Euan A., Director
Brown Michael Jon, EVP Chief Legal Compliance Off
AUGUSTINOS NICHOLAS, Director
Sylvain Jereme M, EVP, Chief Financal Officer
Boehnlein Glenn S, Director
Leach Jacob Steven, President, CEO, and Director

How to read Form 4 transaction codes