Datadog (DDOG)Sen. Alan Armstrong disclosed a purchase $1K–$15K

$1,001–$15,000

Reported range · official band, not an exact amount

116 days

Disclosure lag

Traded

Mar 27, 2026

Disclosed

Jul 21, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Jan 28, 2026Insider · 1 personInsiders: 4 sales (~$4.6M)
2. Feb 10, 2026Company filing · Form 8-K · ResultsReported its results
3. Feb 11, 2026Insider · 1 personInsiders: 7 sales (~$5.5M)
4. Feb 13, 2026Insider · 1 personInsiders: 7 sales (~$999K)
5. Feb 23, 2026Insider · 1 personInsiders: 10 sales (~$2.3M)
6. Feb 26, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“On February 26, 2026 the Board of Directors (the “Board”) of Datadog, Inc. (the “Company”) increased the size of the Board from ten to eleven members and appointed Dominic Phillips as a Class II director of the Company to fill the resulting vacancy.”
7. Mar 2, 2026Insider · 8 peopleInsiders: 8 sales (~$30.9M)
8. Mar 3, 2026Insider · 1 personInsiders: 9 sales (~$3.5M)
9. Mar 9, 2026Insider · 1 personInsiders: 2 sales (~$2.5M)
10. Mar 10, 2026Insider · 1 personInsiders: 7 sales (~$6.8M)
11. Mar 11, 2026Insider · 1 personInsiders: 4 sales (~$2.8M)
12. Mar 13, 2026Insider · 1 personInsiders: 2 sales (~$1.0M)
13. Mar 13, 2026CongressDisclosed purchase of DDOG — reported range $1,001 - $15,000
14. Mar 16, 2026Insider · 2 peopleInsiders: 7 sales (~$7.9M)
15. Mar 23, 2026Insider · 2 peopleInsiders: 10 sales (~$6.7M)
16. Mar 26, 20265% stakeThe Vanguard Group reported a passive stake (13G)

What came next

1. Apr 1, 2026InsiderDirector sold ~$2.41M of DDOG shares in the open market
2. Apr 6, 2026InsiderDirector sold ~$391K of DDOG shares in the open market
3. Apr 21, 2026Company filing · Form 8-K · Shareholder rights, Bylaws or charterChanged the rights of its shareholders, and changed its bylaws, charter or fiscal year (and 2 more items)
4. Apr 29, 20265% stakeVanguard Portfolio Management reported a passive stake (13G) of 5.4%
5. Apr 29, 20265% stakeVanguard Capital Management reported a passive stake (13G) of 7.5%
6. May 7, 2026Company filing · Form 8-K · ResultsReported its results

How to read Senate eFD periodic transaction report

The STOCK Act is a 2012 US law that requires members of Congress, and some senior staff, to publicly report their stock trades, and those of their spouse and dependent children, within 45 days.

Full guide: What is the STOCK Act?

What else is on file for Datadog

For Datadog, OQRO holds 291 insider filings (SEC Form 4 or Form 144), 2 Congress trade reports and 28 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its DDOG page.

Other recent filings by Sen. Alan Armstrong

• Senate eFD periodic transaction report at Williams Companies (WMB)Sep 17, 2026
• Senate eFD periodic transaction report at Williams Companies (WMB)Sep 17, 2026
• Senate eFD periodic transaction report at KKR & Co. (KKR)Jul 21, 2026
• Senate eFD periodic transaction report at Globe Life (GL)Jul 21, 2026
• Senate eFD periodic transaction report at Copart (CPRT)Jul 21, 2026

The full history of Sen. Alan Armstrong is on the profile page.

How this filing works

• The STOCK Act

Other disclosures at Datadog

• SEC Form 4Oct 9, 2026
• SEC Form 4Oct 9, 2026
• SEC Form 4Oct 9, 2026
• SEC Form 4Oct 9, 2026
• SEC Form 4Oct 9, 2026
• SEC Form 4Oct 9, 2026

Everything OQRO holds on this company is on its DDOG page.