On March 13, 2026, The Foletta Family Trust DTD 1/30/2015 (the "Trust") adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by the Trust. The shares set forth
above were sold pursuant to the 10b5-1 Plan. | Shares are held by The Foletta Family Trust DTD 1/30/2015, with respect to which the Reporting Person is a trustee.
FOLETTA MARK G
Director·Indirect · by Trust
Sell · Dispose
Common Stock
Shares-2.00K
Price$80.00
Total Value$160.0K
Shares Owned After50.85K
Transaction DateJul 31, 2026
10b5-1
Footnotes ▸
On March 13, 2026, The Foletta Family Trust DTD 1/30/2015 (the "Trust") adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by the Trust. The shares set forth
above were sold pursuant to the 10b5-1 Plan. | Shares are held by The Foletta Family Trust DTD 1/30/2015, with respect to which the Reporting Person is a trustee.
FOLETTA MARK G
Director·Direct
Common Stock
Shares0
Price-
Total Value$0
Shares Owned After6.33K
10b5-1Holding Only
Footnotes ▸
Represents unvested restricted stock units which were granted on May 28, 2026 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom, Inc.'s 2027 Annual
Meeting of Stockholders.
Post-Transaction Holdings
FOLETTA MARK G
Security
Shares
Change
Common Stock
55.18K
-4.00K (-6.76%)
Original SEC Filing Textexpand_more
=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-07-31
10b5-1 Pre-arranged Plan: Yes
--- Issuer ---
Name: DEXCOM INC (DXCM)
CIK: 0001093557
--- Reporting Owner ---
Name: FOLETTA MARK G
CIK: 0001236389
Role: Director
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-07-31 | Code: S (Open market sale)
Shares: -2,000 | Price: $80.00
Total Value: $160,000.00
Shares Owned After: 50,852 | Ownership: I (Indirect) | Nature: by Trust
Footnotes:
[F1] On March 13, 2026, The Foletta Family Trust DTD 1/30/2015 (the "Trust") adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by the Trust. The shares set forth
above were sold pursuant to the 10b5-1 Plan.
[F2] Shares are held by The Foletta Family Trust DTD 1/30/2015, with respect to which the Reporting Person is a trustee.
[Transaction #2]
Security: Common Stock
Date: 2026-08-03 | Code: S (Open market sale)
Shares: -2,000 | Price: $85.32
Total Value: $170,640.00
Shares Owned After: 48,852 | Ownership: I (Indirect) | Nature: by Trust
Footnotes:
[F1] On March 13, 2026, The Foletta Family Trust DTD 1/30/2015 (the "Trust") adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by the Trust. The shares set forth
above were sold pursuant to the 10b5-1 Plan.
[F2] Shares are held by The Foletta Family Trust DTD 1/30/2015, with respect to which the Reporting Person is a trustee.
--- Holdings ---
[Holding #1]
Security: Common Stock
Ownership: D (Direct)
Footnotes:
[F3] Represents unvested restricted stock units which were granted on May 28, 2026 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom, Inc.'s 2027 Annual
Meeting of Stockholders.
--- Footnotes (Complete Index) ---
F1: On March 13, 2026, The Foletta Family Trust DTD 1/30/2015 (the "Trust") adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by the Trust. The shares set forth
above were sold pursuant to the 10b5-1 Plan.
F2: Shares are held by The Foletta Family Trust DTD 1/30/2015, with respect to which the Reporting Person is a trustee.
F3: Represents unvested restricted stock units which were granted on May 28, 2026 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom, Inc.'s 2027 Annual
Meeting of Stockholders.
--- Signature ---
/s/ /s/ Jereme M. Sylvain, as Attorney-in-Fact for Mark G. Foletta (2026-08-04)
