MDB Insider Sale: 1,000 Class A Shares Sold Under Rule 10b5-1 Plan

Rhea-AI Filing Summary

Thomas Bull, Chief Accounting Officer of MongoDB, Inc. (ticker MDB), reported a sale of 1,000 shares of Class A common stock on 09/08/2025 at a price of $326.25 per share under a Rule 10b5-1 trading plan. Following the reported transaction, the reporting person beneficially owned 11,598 shares (direct). No derivative transactions were reported. The filing is signed on behalf of the reporting person by an attorney-in-fact, Paul Johnston, dated 09/10/2025. The form indicates the sale was executed pursuant to a pre-established trading plan and discloses the change in non-derivative holdings only.

Positive

• Sale executed under a Rule 10b5-1 plan, indicating a pre-established, compliant trading arrangement
• Timely Form 4 filing with signature executed by attorney-in-fact, showing procedural compliance
• No derivative transactions reported, simplifying the ownership change disclosure

Negative

• Reporting person reduced direct holdings by 1,000 Class A shares (sold at $326.25 per share)

Insights

Financial Analyst

TL;DR: Routine insider sale under a 10b5-1 plan; limited direct impact on company fundamentals.

The report documents a non-derivative sale of 1,000 Class A shares by the Chief Accounting Officer on 09/08/2025 at $326.25 per share, executed under a Rule 10b5-1 plan. Because the filing shows a direct sale rather than option exercises or derivative activity and leaves the reporting person with 11,598 shares, this appears to be a scheduled liquidity event rather than a corporate governance or operational development. There is no disclosure here of additional insider purchases, material transactions, or changes to compensation structures that would materially affect MongoDB's financial statements.

Corporate Governance Expert

TL;DR: Filing demonstrates compliance with Section 16 reporting and use of a 10b5-1 plan.

The Form 4 explicitly notes the transaction was made pursuant to a Rule 10b5-1 trading plan and is signed by an attorney-in-fact, indicating procedural adherence to insider-trading safe-harbor provisions and timely disclosure obligations. The limited scope—one non-derivative sale and no amendments or additional related-party disclosures—suggests standard insider reporting practice. No governance red flags or undisclosed related-party arrangements are evident from this filing alone.

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^*

Bull Thomas

(Last) (First) (Middle)

C/O MONGODB, INC.

1633 BROADWAY, 38TH FLOOR

(Street)

NEW YORK NY 10019

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
09/08/2025

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	09/08/2025		S(1)		1,000	D	$326.25	11,598	D

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.

Remarks:

	/s/ Paul Johnston, Attorney-in-Fact	09/10/2025
	** 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.

FAQ

What did the MongoDB (MDB) insider report on the Form 4?

The Form 4 reports that Chief Accounting Officer Thomas Bull sold 1,000 Class A shares on 09/08/2025 at $326.25 per share under a Rule 10b5-1 trading plan.

How many MongoDB shares does the reporting person own after the transaction?

Following the reported sale, the reporting person beneficially owns 11,598 shares of Class A common stock.

Was the sale part of a 10b5-1 trading plan for MongoDB insider trades?

Yes. The filing explicitly states the transaction was pursuant to a Rule 10b5-1 trading plan.

Were any derivative securities reported in the MongoDB Form 4?

No. The filing contains no entries in Table II for derivative securities; only a non-derivative sale is reported.

Who signed the MongoDB Form 4 and when?

The Form 4 was signed on behalf of the reporting person by Paul Johnston, Attorney-in-Fact on 09/10/2025.