Datadog (DDOG) 4: Ittycheria Dev bought 120,000 shares of Class A Common Stoc… (Jun 5, 2026)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-03 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Datadog, Inc. (DDOG) CIK: 0001561550 --- Reporting Owner --- Name: Ittycheria Dev CIK: 0001397383 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Class A Common Stock Date: 2026-06-03 | Code: C (Conversion of derivative) Shares: +120,000 Shares Owned After: 159,235 | Ownership: D (Direct) Footnotes: [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. [Transaction #2] Security: Class A Common Stock Date: 2026-06-03 | Code: S (Open market sale) Shares: -486 | Price: $247.93 Total Value: $120,494.71 Shares Owned After: 158,749 | Ownership: D (Direct) Footnotes: [F2] Price reported is a weighted average sales price. The shares were sold at prices ranging from $247.86 to $247.99. 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. [Transaction #3] Security: Class A Common Stock Date: 2026-06-03 | Code: S (Open market sale) Shares: -76,981 | Price: $248.54 Total Value: $19,132,711.48 Shares Owned After: 81,768 | Ownership: D (Direct) Footnotes: [F3] Price reported is a weighted average sales price. The shares were sold at prices ranging from $248.00 to $248.99. 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. [Transaction #4] Security: Class A Common Stock Date: 2026-06-03 | Code: S (Open market sale) Shares: -42,533 | Price: $249.22 Total Value: $10,600,197.61 Shares Owned After: 39,235 | Ownership: D (Direct) Footnotes: [F4] Price reported is a weighted average sales price. The shares were sold at prices ranging from $249.00 to $249.4825. 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. [Transaction #5] Security: Class A Common Stock Date: 2026-06-03 | Code: S (Open market sale) Shares: -74 | Price: $247.93 Total Value: $18,346.96 Shares Owned After: 90,825 | Ownership: I (Indirect) | Nature: By LLC Footnotes: [F2] Price reported is a weighted average sales price. The shares were sold at prices ranging from $247.86 to $247.99. 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. [F5] Shares are held directly by LIDI 11 21 LLC (the "LLC"). The Ittycheria Family Trust (the "Trust") is the sole member of the LLC and Reporting Person is a beneficiary of the Trust. [Transaction #6] Security: Class A Common Stock Date: 2026-06-03 | Code: S (Open market sale) Shares: -11,517 | Price: $248.54 Total Value: $2,862,407.54 Shares Owned After: 79,308 | Ownership: I (Indirect) | Nature: By LLC Footnotes: [F3] Price reported is a weighted average sales price. The shares were sold at prices ranging from $248.00 to $248.99. 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. [F5] Shares are held directly by LIDI 11 21 LLC (the "LLC"). The Ittycheria Family Trust (the "Trust") is the sole member of the LLC and Reporting Person is a beneficiary of the Trust. [Transaction #7] Security: Class A Common Stock Date: 2026-06-03 | Code: S (Open market sale) Shares: -6,409 | Price: $249.22 Total Value: $1,597,281.74 Shares Owned After: 72,899 | Ownership: I (Indirect) | Nature: By LLC Footnotes: [F4] Price reported is a weighted average sales price. The shares were sold at prices ranging from $249.00 to $249.4825. 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. [F5] Shares are held directly by LIDI 11 21 LLC (the "LLC"). The Ittycheria Family Trust (the "Trust") is the sole member of the LLC and Reporting Person is a beneficiary of the Trust. --- Derivative Transactions --- [Transaction #1] Security: Stock Option (Right to Buy) Date: 2026-06-03 | Code: M (Exercise of derivative) Shares: -120,000 | Price: $0.00 Exercisable: N/A | Expires: 2028-12-29 Shares Owned After: 120,000 | Ownership: D (Direct) [Transaction #2] Security: Class B Common Stock Date: 2026-06-03 | Code: M (Exercise of derivative) Shares: +120,000 | Price: $3.07 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [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. [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. [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. [Transaction #3] Security: Class B Common Stock Date: 2026-06-03 | Code: C (Conversion of derivative) Shares: -120,000 | Price: $0.00 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [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. [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. [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. --- Footnotes (Complete Index) --- 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: Price reported is a weighted average sales price. The shares were sold at prices ranging from $247.86 to $247.99. 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. F3: Price reported is a weighted average sales price. The shares were sold at prices ranging from $248.00 to $248.99. 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. F4: Price reported is a weighted average sales price. The shares were sold at prices ranging from $249.00 to $249.4825. 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. F5: Shares are held directly by LIDI 11 21 LLC (the "LLC"). The Ittycheria Family Trust (the "Trust") is the sole member of the LLC and Reporting Person is a beneficiary of the Trust. --- Signature --- /s/ /s/ Kerry Acocella, Attorney-in-Fact (2026-06-05)