Nicholas Augustinos

CIK: 0001238485

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)4 (36.4%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (18.2%)

Compensation grants

Other (G, F, J, C, D, …)5 (45.5%)

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

Companies & Roles (1)

DXCM

DEXCOM INC

Director

Discretionary Trading P&L

Holdings

Transaction History (11 total)

DXCM
DEXCOM INC
Sep 15, 2026
Sale(S)
Indirect
6.5K shares at avg. $84.04$550K
DXCM
DEXCOM INC
Sep 14, 2026
Sale(S)
Indirect
1.6K shares at avg. $84.02$130K
DXCM
DEXCOM INC
Aug 12, 2026
Gift(G)
Indirect
1.1K shares-
DXCM
DEXCOM INC
May 28, 2026
Award(A)
Direct
5.6K shares-
DXCM
DEXCOM INC
May 8, 2026
Gift(G)
Indirect
5K shares-
DXCM
DEXCOM INC
May 8, 2026
Gift(G)
Direct
5K shares-
DXCM
DEXCOM INC
Jun 16, 2025
Sale(S)
Indirect
3.7K shares at avg. $82.80$304K
DXCM
DEXCOM INC
Jun 13, 2025
Sale(S)
Indirect
2.6K shares at avg. $81.69$214K
DXCM
DEXCOM INC
May 8, 2025
Gift(G)
Direct
2.6K shares-
DXCM
DEXCOM INC
May 8, 2025
Gift(G)
Indirect
2.6K shares-
DXCM
DEXCOM INC
May 8, 2025
Award(A)
Direct
5K shares-

		Type	Shares	Price		Ownership
Sep 15, 2026	DXCM DEXCOM INC	Sale(S)	6,539	$84.04	$549,538	Indirect
Sep 14, 2026	DXCM DEXCOM INC	Sale(S)	1,550	$84.02	$130,231	Indirect
Aug 12, 2026	DXCM DEXCOM INC	Gift(G)	1,075	-	$0	Indirect
May 28, 2026	DXCM DEXCOM INC	Award(A)	5,575	-	$0	Direct
May 8, 2026	DXCM DEXCOM INC	Gift(G)	5,046	-	$0	Indirect
May 8, 2026	DXCM DEXCOM INC	Gift(G)	5,046	-	$0	Direct
Jun 16, 2025	DXCM DEXCOM INC	Sale(S)	3,672	$82.80	$304,042	Indirect
Jun 13, 2025	DXCM DEXCOM INC	Sale(S)	2,618	$81.69	$213,864	Indirect
May 8, 2025	DXCM DEXCOM INC	Gift(G)	2,618	-	-	Direct
May 8, 2025	DXCM DEXCOM INC	Gift(G)	2,618	-	-	Indirect
May 8, 2025	DXCM DEXCOM INC	Award(A)	5,046	-	-	Direct

1-11 of 11 transactions

About AUGUSTINOS NICHOLAS

AUGUSTINOS NICHOLAS (SEC CIK 0001238485) files insider reports with the SEC as Director of DEXCOM INC (DXCM).

Signal8 holds 6 ownership filings by AUGUSTINOS NICHOLAS, all Form 4s, filed between May 12, 2025 and Sep 16, 2026. Those filings report 11 transactions, from May 8, 2025 to Sep 15, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on AUGUSTINOS NICHOLAS's filings is in SAN DIEGO, CA.

Recent filings by AUGUSTINOS NICHOLAS

Sep 15, 2026: Open-market sale of DXCM shares (Form 4, code S).
Sep 14, 2026: Open-market sale of DXCM shares (Form 4, code S).
Aug 12, 2026: Gift of DXCM shares (Form 4, code G).
May 28, 2026: Grant or award of DXCM shares (Form 4, code A).
May 8, 2026: Gifts of DXCM shares (2 lines, Form 4, code G).

Other insiders filing for DEXCOM INC (DXCM)

Ashley Euan A., Director
Stern Sadie, EVP Chief People & Culture Off
Brown Michael Jon, EVP Chief Legal Compliance Off
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