Peter Thomas Killalea - 23 Sep 2025 Form 4 Insider Report for MongoDB, Inc. (MDB)

Reporting relationship: Director
Issuer ticker: MDB
Reported as of: 23 Sep 2025
Net transaction value: -$6,307,453
SEC form: 4
Accepted by SEC: 25 Sep 2025, 16:38:22 UTC
Prior SEC filing: 02 Jul 2025
Next SEC filing: 06 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Paul Johnston, Attorney-in-Fact

Key filing fact

Peter Thomas Killalea filed Form 4 for MongoDB, Inc. (MDB) on 25 Sep 2025.

Key facts

This page summarizes Peter Thomas Killalea's Form 4 filing for MongoDB, Inc. (MDB).
10 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 25 Sep 2025, 16:38.

Change

Previous filing in this sequence was filed on 02 Jul 2025.
Current net transaction value: -$6,307,453.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001638728 Primary reporting owner

Killalea Peter Thomas

Relationship: Director
Address: C/O MONGODB, INC., 1633 BROADWAY, 38TH FLOOR, NEW YORK
Signature: /s/ Paul Johnston, Attorney-in-Fact
Signature date: 25 Sep 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MDB transaction

Class A Common Stock

Options Exercise

Transaction value: $130,000
Shares: +20,000
Change %: +62%
Price: $6.50
Shares after: 52,293
Date: 23 Sep 2025
Ownership: Direct
Footnotes: F1

MDB transaction

Class A Common Stock

Sale

Transaction value: $1,913,936
Shares: -6,003
Change %: -11%
Price: $318.83
Shares after: 46,290
Date: 23 Sep 2025
Ownership: Direct
Footnotes: F1, F2

MDB transaction

Class A Common Stock

Sale

Transaction value: $615,365
Shares: -1,925
Change %: -4.2%
Price: $319.67
Shares after: 44,365
Date: 23 Sep 2025
Ownership: Direct
Footnotes: F1, F3

MDB transaction

Class A Common Stock

Sale

Transaction value: $128,240
Shares: -400
Change %: -0.9%
Price: $320.60
Shares after: 43,965
Date: 23 Sep 2025
Ownership: Direct
Footnotes: F1, F4

MDB transaction

Class A Common Stock

Sale

Transaction value: $515,648
Shares: -1,600
Change %: -3.6%
Price: $322.28
Shares after: 42,365
Date: 23 Sep 2025
Ownership: Direct
Footnotes: F1, F5

MDB transaction

Class A Common Stock

Sale

Transaction value: $1,455,030
Shares: -4,500
Change %: -11%
Price: $323.34
Shares after: 37,865
Date: 23 Sep 2025
Ownership: Direct
Footnotes: F1, F6

MDB transaction

Class A Common Stock

Sale

Transaction value: $1,135,260
Shares: -3,500
Change %: -9.2%
Price: $324.36
Shares after: 34,365
Date: 23 Sep 2025
Ownership: Direct
Footnotes: F1, F7

MDB transaction

Class A Common Stock

Sale

Transaction value: $641,354
Shares: -1,972
Change %: -5.7%
Price: $325.23
Shares after: 32,393
Date: 23 Sep 2025
Ownership: Direct
Footnotes: F1, F8

MDB transaction

Class A Common Stock

Sale

Transaction value: $32,620
Shares: -100
Change %: -0.31%
Price: $326.20
Shares after: 32,293
Date: 23 Sep 2025
Ownership: Direct
Footnotes: F1, F9

MDB holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,000
Date: 23 Sep 2025
Ownership: UAISLE Trust U/A DTD 11/15/2021
Footnotes: F10

MDB holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,000
Date: 23 Sep 2025
Ownership: CEANSA Trust U/A DTD 11/15/2021
Footnotes: F11

MDB holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,000
Date: 23 Sep 2025
Ownership: BREOGA Trust U/A DTD 11/15/2021
Footnotes: F12

MDB holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,000
Date: 23 Sep 2025
Ownership: AOGALL Trust U/A DTD 11/15/2021
Footnotes: F13

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MDB transaction Derivative

Stock Option (Right to Buy)

Options Exercise

Transaction value: $0
Shares: -20,000
Change %: -40%
Price: $0.000000
Shares after: 30,000
Date: 23 Sep 2025
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 20,000
Exercise price: $6.50
Footnotes: F1, F14

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 14 footnotes

Footnote F1

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

Footnote F2

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $318.27 to $319.25, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

Footnote F3

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $319.27 to $320.22, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

Footnote F4

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $320.29 to $321.25, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

Footnote F5

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $321.71 to $322.68, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

Footnote F6

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $322.86 to $323.83, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

Footnote F7

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $323.86 to $324.84, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

Footnote F8

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $324.86 to $325.74, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

Footnote F9

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $326.13 to $326.36, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

Footnote F10

These shares are held by the UAISLE Trust U/A DTD 11/15/2021 for the benefit of the Reporting Person's children.

Footnote F11

These shares are held by the CEANSA Trust U/A DTD 11/15/2021 for the benefit of the Reporting Person's children.

Footnote F12

These shares are held by the BREOGA Trust U/A DTD 11/15/2021 for the benefit of the Reporting Person's children.

Footnote F13

These shares are held by AOGALL Trust U/A DTD 11/15/2021 for the benefit of the Reporting Person's children.

Footnote F14

Immediately exercisable and fully vested.