Callahan Michael James 4
4 · Datadog, Inc. · Filed Dec 16, 2025
Insider Transaction Report
Form 4
Datadog, Inc.DDOG
Callahan Michael James
Director
Transactions
- Conversion
Class A Common Stock
2025-12-12+15,000→ 27,496 total(indirect: By Trust) - Gift
Class A Common Stock
2025-12-12−15,000→ 12,496 total(indirect: By Trust) - Conversion
Class B Common Stock
2025-12-12−15,000→ 240,542 total(indirect: By Trust)→ Class A Common Stock (15,000 underlying)
Holdings
- 19,612
Class A Common Stock
Footnotes (3)
- [F1]Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.
- [F2]The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.
- [F3]Shares donated to a donor-advised fund, which will use the gifted shares for charitable purposes.