| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Le-Quoc Alexis | Chief Technology Officer, Director | C/O DATADOG, INC., 620 8TH AVENUE, 45TH FLOOR, NEW YORK | /s/ Kerry Acocella, Attorney-in-Fact | 2025-12-04 | 0001783984 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | DDOG | Class A Common Stock | Sale | -$2.18M | -13.8K | -3.91% | $158.60 | 339K | Dec 2, 2025 | Direct | F1 |
| holding | DDOG | Class A Common Stock | 169 | Dec 2, 2025 | By Trust | F2 |
| Id | Content |
|---|---|
| F1 | The Reporting Person was required by the Issuer to sell only the number of shares of common stock necessary to cover applicable tax withholding obligations realized upon the vesting of restricted stock units and performance-based restricted stock units, as well as any related brokerage commission fees. |
| F2 | Shares are held by the Alexis Le-Quoc Revocable Trust. |