Dexcom (DXCM) director Steven Altman gifts 10,074 shares to family trust

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Dexcom director Steven R. Altman reported a bona fide gift of 10,074 shares of Dexcom common stock. The filing shows two gift transactions of 5,037 shares each on common stock. Following these transactions, 63,667 shares are held indirectly through the Altman Family Trust, where Altman serves as trustee, and his direct holdings in these reported shares are now zero.

Insider Trade Summary

10,074 shares gifted

Mixed 2 txns

Insider ALTMAN STEVEN R

Role null

Type	Security	Shares	Price	Value
Gift	Common Stock	5,037	$0.00	--
Gift	Common Stock	5,037	$0.00	--

Holdings After Transaction: Common Stock — 0 shares (Direct, null); Common Stock — 63,667 shares (Indirect, by Trust)

Footnotes (1)

Shares were transferred from direct ownership to ownership under the Steven R. and Lisa J. Altman, TTEE's Altman Family Trust DTD 8/21/92, upon vesting of previously awarded restricted stock units. Shares are held by the Steven R. and Lisa J. Altman, TTEE's Altman Family Trust DTD 8/21/92, with respect to which the reporting person is a trustee.

Key Figures

Gifted shares total: 10,074 shares Individual gift transactions: 5,037 shares each Indirect holdings after transaction: 63,667 shares +2 more

5 metrics

Gifted shares total 10,074 shares Bona fide gift of Dexcom common stock

Individual gift transactions 5,037 shares each Two non-derivative gift dispositions

Indirect holdings after transaction 63,667 shares Held via Altman Family Trust after gifts

Direct holdings after transaction 0 shares Direct position in these reported shares

Gift price per share $0.0000 per share Bona fide gift, not a market sale

Key Terms

bona fide gift, restricted stock units, indirect ownership, Altman Family Trust

4 terms

bona fide gift financial

"transaction_code_description: "Bona fide gift""

A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.

restricted stock units financial

"upon vesting of previously awarded restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

indirect ownership financial

"total_shares_following_transaction 63,667.0000, ownership_type indirect"

Altman Family Trust financial

"Altman Family Trust DTD 8/21/92, with respect to which the reporting person is a trustee"

Form 4 Insider Transactions: What Each Field Means →

05/11/2026 - 07:13 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

ALTMAN STEVEN R

(Last)

(First)

(Middle)

6340 SEQUENCE DRIVE

(Street)

SAN DIEGO

CALIFORNIA

92121

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
DEXCOM INC [ DXCM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/08/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/08/2026		G		5,037⁽¹⁾	D	$0	0	D
Common Stock	05/08/2026		G		5,037⁽¹⁾	A	$0	63,667	I	by Trust⁽²⁾

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Shares were transferred from direct ownership to ownership under the Steven R. and Lisa J. Altman, TTEE's Altman Family Trust DTD 8/21/92, upon vesting of previously awarded restricted stock units.

2. Shares are held by the Steven R. and Lisa J. Altman, TTEE's Altman Family Trust DTD 8/21/92, with respect to which the reporting person is a trustee.

Remarks:

	/s/ Jereme M. Sylvain, as Attorney-in-Fact for Steven R. Altman	05/11/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Dexcom (DXCM) director Steven R. Altman report?

Steven R. Altman reported a bona fide gift of Dexcom common stock totaling 10,074 shares. The filing shows two gift transactions of 5,037 shares each, classified as non-derivative dispositions at zero dollars per share.

Was Steven R. Altman buying or selling Dexcom (DXCM) shares in this Form 4?

He was not buying or selling shares in the market; he reported a bona fide gift disposition. The transaction code "G" indicates a gift transfer, and the price per share is reported as zero dollars.

How many Dexcom (DXCM) shares were involved in Steven R. Altman’s reported gift?

The Form 4 reports gift transfers totaling 10,074 Dexcom common shares. This consists of two separate non-derivative transactions of 5,037 shares each, both coded as bona fide gifts rather than open-market trades.

How many Dexcom (DXCM) shares does Steven R. Altman hold after the gift?

After the reported transactions, 63,667 Dexcom common shares are held indirectly through the Altman Family Trust. The filing shows zero shares remaining in the directly held position connected to these disclosed gift transactions.

What role does the Altman Family Trust play in Steven R. Altman’s Dexcom (DXCM) holdings?

The filing states that shares are held by the Altman Family Trust, with Steven R. and Lisa J. Altman as trustees. This means his reported post-transaction Dexcom holdings of 63,667 shares are held indirectly through that trust structure.

Were the Dexcom (DXCM) shares in Steven R. Altman’s gift linked to restricted stock units?

Yes. A footnote explains the shares were transferred upon vesting of previously awarded restricted stock units. Those vested shares moved from direct ownership into the Altman Family Trust as part of the reported gift disposition.