Sean Michael Walters - 11 Sep 2026 Form 4 Insider Report for Datadog, Inc. (DDOG)

Reporting relationship: Chief Revenue Officer
Issuer ticker: DDOG
Reported as of: 11 Sep 2026
Net transaction value: -$2,588,362
SEC form: 4
Accepted by SEC: 15 Sep 2026, 16:38:26 UTC
Prior SEC filing: 04 Sep 2026
Source filing: View source filing
Reporting owner signature: /s/ Kerry Acocella, Attorney-in-Fact

Key filing fact

Sean Michael Walters filed Form 4 for Datadog, Inc. (DDOG) on 15 Sep 2026.

Key facts

This page summarizes Sean Michael Walters's Form 4 filing for Datadog, Inc. (DDOG).
5 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 15 Sep 2026, 16:38.

Change

Previous filing in this sequence was filed on 04 Sep 2026.
Current net transaction value: -$2,588,362.

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 0001903980 Primary reporting owner

Walters Sean Michael

Relationship: Chief Revenue Officer
Address: C/O DATADOG, INC., 620 8TH AVENUE, 45TH FLOOR, NEW YORK
Signature: /s/ Kerry Acocella, Attorney-in-Fact
Signature date: 15 Sep 2026

Reported non-derivative transactions

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

DDOG transaction

Class A Common Stock

Sale

Transaction value: $175,748
Shares: -800
Change %: -0.33%
Price: $219.68
Shares after: 244,045
Date: 11 Sep 2026
Ownership: Direct
Footnotes: F1, F2

DDOG transaction

Class A Common Stock

Sale

Transaction value: $1,285,195
Shares: -5,824
Change %: -2.4%
Price: $220.67
Shares after: 238,221
Date: 11 Sep 2026
Ownership: Direct
Footnotes: F1, F3

DDOG transaction

Class A Common Stock

Sale

Transaction value: $948,927
Shares: -4,286
Change %: -1.8%
Price: $221.40
Shares after: 233,935
Date: 11 Sep 2026
Ownership: Direct
Footnotes: F1, F4

DDOG transaction

Class A Common Stock

Sale

Transaction value: $111,156
Shares: -500
Change %: -0.21%
Price: $222.31
Shares after: 233,435
Date: 11 Sep 2026
Ownership: Direct
Footnotes: F1, F5

DDOG transaction

Class A Common Stock

Sale

Transaction value: $67,336
Shares: -300
Change %: -0.13%
Price: $224.45
Shares after: 233,135
Date: 11 Sep 2026
Ownership: Direct
Footnotes: F1, F6

DDOG holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 8
Date: 11 Sep 2026
Ownership: By Son

^* 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 6 footnotes

Footnote F1

Shares sold pursuant to a 10b5-1 plan dated December 12, 2025.

Footnote F2

Price reported is a weighted-average sales price. The shares were sold at prices ranging from $219.13 to $220.08. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

Footnote F3

Price reported is a weighted-average sales price. The shares were sold at prices ranging from $220.18 to $221.17. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

Footnote F4

Price reported is a weighted-average sales price. The shares were sold at prices ranging from $221.19 to $221.89. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

Footnote F5

Price reported is a weighted-average sales price. The shares were sold at prices ranging from $222.20 to $222.45. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

Footnote F6

Price reported is a weighted-average sales price. The shares were sold at prices ranging from $224.13 to $224.86. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.