[Form 4] MongoDB, Inc. Insider Trading Activity

Rhea-AI Filing Summary

MongoDB (MDB) reported an insider transaction by a director on 10/01/2025 under a Rule 10b5-1 trading plan. The director sold 833 shares of Class A common stock at $311.88 directly and 166 shares at $311.88 through a trust.

Following the sales, the director beneficially owned 46,533 shares directly and 14,327 shares indirectly via The Narragansett Bay Childrens Trust, with beneficial ownership of the trust shares disclaimed except for any pecuniary interest.

Insider Trade Summary

Net Seller: 999 shares ($311,568)

Net Sell 2 txns

Insider Hazard Charles M Jr

Role Director

Sold 999 shs ($312K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	833	$311.88	$260K
Sale	Class A Common Stock	166	$311.88	$52K

Holdings After Transaction: Class A Common Stock — 46,533 shares (Direct); Class A Common Stock — 14,327 shares (Indirect, By Trust)

Footnotes (1)

1. The transaction was pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person. These shares are held by The Narragansett Bay Childrens Trust (the "Trust"). The "Reporting Person" is the Trustee of the Trust and, as such, has the power to vote and dispose of the shares held by the Trust. The "Reporting Person" disclaims beneficial ownership of the shares owned by the Trust except to the extent of his pecuniary interest therein and this report shall not be deemed an admission that the "Reporting Person" is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

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Form 4 Insider Transactions: What Each Field Means →

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).

X

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^*

Hazard Charles M Jr

(Last) (First) (Middle)

C/O FLYBRIDGE CAPITAL PARTNERS

855 BOYLSTON ST, SUITE 1000

(Street)

BOSTON MA 02116

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MongoDB, Inc. [ MDB ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2025

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

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

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

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)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	10/01/2025		S(1)		833	D	$311.88	46,533	D
Class A Common Stock	10/01/2025		S(1)		166	D	$311.88	14,327	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The transaction was pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

2. These shares are held by The Narragansett Bay Childrens Trust (the "Trust"). The "Reporting Person" is the Trustee of the Trust and, as such, has the power to vote and dispose of the shares held by the Trust. The "Reporting Person" disclaims beneficial ownership of the shares owned by the Trust except to the extent of his pecuniary interest therein and this report shall not be deemed an admission that the "Reporting Person" is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

Remarks:

	/s/ Paul Johnston, Attorney-in-Fact	10/03/2025
	** 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.