Michael James Callahan - Nov 6, 2025 Form 4 Insider Report for Datadog, Inc. (DDOG)

Role
Director
Signature
/s/ Kerry Acocella, Attorney-in-Fact
Stock symbol
DDOG
Transactions as of
Nov 6, 2025
Transactions value $
-$2,343,375
Form type
4
Date filed
11/10/2025, 04:22 PM
Previous filing
Oct 16, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Callahan Michael James Director C/O DATADOG, INC., 620 8TH AVENUE, 45TH FLOOR, NEW YORK /s/ Kerry Acocella, Attorney-in-Fact 2025-11-10 0001784030

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction DDOG Class A Common Stock Conversion of derivative security $0 +12.5K +100.03% $0.00 25K Nov 6, 2025 By Trust F1, F2
transaction DDOG Class A Common Stock Sale -$2.34M -12.5K -50.01% $187.47 12.5K Nov 6, 2025 By Trust F2, F3
holding DDOG Class A Common Stock 19.6K Nov 6, 2025 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction DDOG Class B Common Stock Conversion of derivative security $0 -12.5K -4.66% $0.00 256K Nov 6, 2025 Class A Common Stock 12.5K By Trust F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
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 sold pursuant to a 10b5-1 plan dated December 12, 2024.