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Callahan Michael James

Disclosed activity across 1 company

Tapewire entity
25761
SEC CIK
0001784030

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Datadog, Inc.DDOG · Entity 2027DirectorAugust 04, 2026August 06, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Datadog, Inc.

Report date August 04, 2026 · Filed August 06, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Class A Common StockSEC Table I · non-derivativeIndirectBy Trust14,996 Last balance in matching sequence After 2026-08-04 transaction · row 2 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 1 · 2026-08-04 · Conversion · Acquired 12,500 · Balance 27,496

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.

Row 2 · 2026-08-04 · Sale · Disposed 12,500 · Balance 14,996

F3: Shares sold pursuant to a 10b5-1 plan dated March 13, 2026.

F2: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Class B Common StockSEC Table II · derivative / convertible securityIndirectBy Trust85,542 Reported balance After 2026-08-04 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2026-08-04 · Conversion · Disposed 12,500 · Balance 85,542

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.

Class A Common StockSEC Table I · non-derivativeDirect20,684 Reported balance Holding disclosure · report date 2026-08-04 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 20,684

Filing footnotes · ownership attribution and instrument terms

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 March 13, 2026.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
August 04, 2026 Filed Aug 6, 2026 20:37 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass B Common Stock · Derivative 12,500 $0.00 $0.00
Disclosure

SEC source: 0001561550-26-000256 · wk-form4_1786048633.xml · derivative · entry 4

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 85,542

Underlying: Class A Common Stock · 12,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 · derivative.exercise_date: 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 · derivative.expiration_date: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
August 04, 2026 Filed Aug 6, 2026 20:37 UTC Datadog, Inc. DDOG · Entity 2027 SaleClass A Common Stock 12,500 $287.47 $3,593,375.00
Disclosure

SEC source: 0001561550-26-000256 · wk-form4_1786048633.xml · nonDerivative · entry 2

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 14,996

F3 · kind: Shares sold pursuant to a 10b5-1 plan dated March 13, 2026.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
August 04, 2026 Filed Aug 6, 2026 20:37 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass A Common Stock 12,500 $0.00 $0.00
Disclosure

SEC source: 0001561550-26-000256 · wk-form4_1786048633.xml · nonDerivative · entry 1

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 27,496

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
July 01, 2026 Filed Jul 6, 2026 21:54 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass B Common Stock · Derivative 12,500 $0.00 $0.00
Disclosure

SEC source: 0001561550-26-000236 · wk-form4_1783374859.xml · derivative · entry 4

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 98,042

Underlying: Class A Common Stock · 12,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 · derivative.exercise_date: 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 · derivative.expiration_date: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
July 01, 2026 Filed Jul 6, 2026 21:54 UTC Datadog, Inc. DDOG · Entity 2027 SaleClass A Common Stock 12,500 $267.47 $3,343,375.00
Disclosure

SEC source: 0001561550-26-000236 · wk-form4_1783374859.xml · nonDerivative · entry 2

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 14,996

F3 · kind: Shares sold pursuant to a 10b5-1 plan dated March 13, 2026.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
July 01, 2026 Filed Jul 6, 2026 21:54 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass A Common Stock 12,500 Not disclosed Not disclosed
Disclosure

SEC source: 0001561550-26-000236 · wk-form4_1783374859.xml · nonDerivative · entry 1

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 27,496

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
June 29, 2026 Filed Jul 1, 2026 20:31 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass B Common Stock · Derivative 12,500 $0.00 $0.00
Disclosure

SEC source: 0001561550-26-000232 · wk-form4_1782937895.xml · derivative · entry 4

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 110,542

Underlying: Class A Common Stock · 12,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 · derivative.exercise_date: 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 · derivative.expiration_date: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
June 29, 2026 Filed Jul 1, 2026 20:31 UTC Datadog, Inc. DDOG · Entity 2027 SaleClass A Common Stock 12,500 $247.47 $3,093,375.00
Disclosure

SEC source: 0001561550-26-000232 · wk-form4_1782937895.xml · nonDerivative · entry 2

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 14,996

F3 · kind: Shares sold pursuant to a 10b5-1 plan dated March 13, 2026.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
June 29, 2026 Filed Jul 1, 2026 20:31 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass A Common Stock 12,500 Not disclosed Not disclosed
Disclosure

SEC source: 0001561550-26-000232 · wk-form4_1782937895.xml · nonDerivative · entry 1

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 27,496

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
June 15, 2026 Filed Jun 16, 2026 20:39 UTC Datadog, Inc. DDOG · Entity 2027 GrantClass A Common Stock 1,072 $0.00 $0.00
Disclosure

SEC source: 0001561550-26-000205 · wk-form4_1781642354.xml · nonDerivative · entry 11

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,684

F13 · shares: Represents the number of shares underlying Restricted Stock Units ("RSUs") granted pursuant to the Issuer's non-employee director compensation policy. Each RSU represents a contingent right to receive one share of Issuer's Class A common stock. The RSUs vest on the earlier of (A) the Company's next annual meeting of stockholders and (B) June 15, 2027, in each case, subject to the Reporting Person's continuous service to the Issuer through the vesting date.

Read SEC document
June 12, 2026 Filed Jun 16, 2026 20:39 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass B Common Stock · Derivative 112,500 $0.00 $0.00
Disclosure

SEC source: 0001561550-26-000205 · wk-form4_1781642354.xml · derivative · entry 12

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 123,042

Underlying: Class A Common Stock · 112,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 · derivative.exercise_date: 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 · derivative.expiration_date: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
June 12, 2026 Filed Jun 16, 2026 20:39 UTC Datadog, Inc. DDOG · Entity 2027 SaleClass A Common Stock 1,746 $236.20 $412,408.87
Disclosure

SEC source: 0001561550-26-000205 · wk-form4_1781642354.xml · nonDerivative · entry 10

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 14,996

F3 · kind: Shares sold pursuant to a 10b5-1 plan dated March 13, 2026.

F12 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $235.90 to $236.65. 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.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
June 12, 2026 Filed Jun 16, 2026 20:39 UTC Datadog, Inc. DDOG · Entity 2027 SaleClass A Common Stock 2,901 $235.49 $683,157.36
Disclosure

SEC source: 0001561550-26-000205 · wk-form4_1781642354.xml · nonDerivative · entry 9

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 16,742

F3 · kind: Shares sold pursuant to a 10b5-1 plan dated March 13, 2026.

F11 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $234.86 to $235.85. 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.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
June 12, 2026 Filed Jun 16, 2026 20:39 UTC Datadog, Inc. DDOG · Entity 2027 SaleClass A Common Stock 16,145 $234.10 $3,779,517.05
Disclosure

SEC source: 0001561550-26-000205 · wk-form4_1781642354.xml · nonDerivative · entry 8

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 19,643

F3 · kind: Shares sold pursuant to a 10b5-1 plan dated March 13, 2026.

F10 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $233.85 to $234.84. 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.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
June 12, 2026 Filed Jun 16, 2026 20:39 UTC Datadog, Inc. DDOG · Entity 2027 SaleClass A Common Stock 12,005 $233.37 $2,801,574.44
Disclosure

SEC source: 0001561550-26-000205 · wk-form4_1781642354.xml · nonDerivative · entry 7

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 35,788

F3 · kind: Shares sold pursuant to a 10b5-1 plan dated March 13, 2026.

F9 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $232.85 to $233.84. 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.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
June 12, 2026 Filed Jun 16, 2026 20:39 UTC Datadog, Inc. DDOG · Entity 2027 SaleClass A Common Stock 18,830 $232.31 $4,374,482.04
Disclosure

SEC source: 0001561550-26-000205 · wk-form4_1781642354.xml · nonDerivative · entry 6

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 47,793

F3 · kind: Shares sold pursuant to a 10b5-1 plan dated March 13, 2026.

F8 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $231.84 to $232.83. 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.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
June 12, 2026 Filed Jun 16, 2026 20:39 UTC Datadog, Inc. DDOG · Entity 2027 SaleClass A Common Stock 14,173 $231.30 $3,278,221.99
Disclosure

SEC source: 0001561550-26-000205 · wk-form4_1781642354.xml · nonDerivative · entry 5

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 66,623

F3 · kind: Shares sold pursuant to a 10b5-1 plan dated March 13, 2026.

F7 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $230.83 to $231.82. 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.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
June 12, 2026 Filed Jun 16, 2026 20:39 UTC Datadog, Inc. DDOG · Entity 2027 SaleClass A Common Stock 28,701 $230.06 $6,603,015.20
Disclosure

SEC source: 0001561550-26-000205 · wk-form4_1781642354.xml · nonDerivative · entry 4

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 80,796

F3 · kind: Shares sold pursuant to a 10b5-1 plan dated March 13, 2026.

F6 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $229.83 to $230.82. 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.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
June 12, 2026 Filed Jun 16, 2026 20:39 UTC Datadog, Inc. DDOG · Entity 2027 SaleClass A Common Stock 11,284 $229.50 $2,589,685.90
Disclosure

SEC source: 0001561550-26-000205 · wk-form4_1781642354.xml · nonDerivative · entry 3

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 109,497

F3 · kind: Shares sold pursuant to a 10b5-1 plan dated March 13, 2026.

F5 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $228.83 to $229.82. 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.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
June 12, 2026 Filed Jun 16, 2026 20:39 UTC Datadog, Inc. DDOG · Entity 2027 SaleClass A Common Stock 6,715 $228.31 $1,533,092.25
Disclosure

SEC source: 0001561550-26-000205 · wk-form4_1781642354.xml · nonDerivative · entry 2

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 120,781

F3 · kind: Shares sold pursuant to a 10b5-1 plan dated March 13, 2026.

F4 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $227.73 to $228.71. 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.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
June 12, 2026 Filed Jun 16, 2026 20:39 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass A Common Stock 112,500 Not disclosed Not disclosed
Disclosure

SEC source: 0001561550-26-000205 · wk-form4_1781642354.xml · nonDerivative · entry 1

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 127,496

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
May 15, 2026 Filed May 19, 2026 20:50 UTC Datadog, Inc. DDOG · Entity 2027 GiftClass A Common Stock 2,500 $0.00 $0.00
Disclosure

SEC source: 0001561550-26-000149 · wk-form4_1779223835.xml · nonDerivative · entry 1

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 14,996

F1 · kind: Shares donated to a donor-advised fund, which will use the gifted shares for charitable purposes.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
May 12, 2026 Filed May 14, 2026 20:38 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass B Common Stock · Derivative 5,000 $0.00 $0.00
Disclosure

SEC source: 0001561550-26-000146 · wk-form4_1778791127.xml · derivative · entry 3

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 235,542

Underlying: Class A Common Stock · 5,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 · derivative.exercise_date: 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 · derivative.expiration_date: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
May 12, 2026 Filed May 14, 2026 20:38 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass A Common Stock 5,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001561550-26-000146 · wk-form4_1778791127.xml · nonDerivative · entry 1

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 17,496

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
December 12, 2025 Filed Dec 16, 2025 21:10 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass B Common Stock · Derivative 15,000 $0.00 $0.00
Disclosure

SEC source: 0001561550-25-000358 · wk-form4_1765919446.xml · derivative · entry 4

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 240,542

Underlying: Class A Common Stock · 15,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 · derivative.exercise_date: 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 · derivative.expiration_date: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
December 12, 2025 Filed Dec 16, 2025 21:10 UTC Datadog, Inc. DDOG · Entity 2027 GiftClass A Common Stock 15,000 $0.00 $0.00
Disclosure

SEC source: 0001561550-25-000358 · wk-form4_1765919446.xml · nonDerivative · entry 2

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 12,496

F3 · kind: Shares donated to a donor-advised fund, which will use the gifted shares for charitable purposes.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
December 12, 2025 Filed Dec 16, 2025 21:10 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass A Common Stock 15,000 $0.00 $0.00
Disclosure

SEC source: 0001561550-25-000358 · wk-form4_1765919446.xml · nonDerivative · entry 1

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 27,496

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
November 06, 2025 Filed Nov 10, 2025 21:22 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass B Common Stock · Derivative 12,500 $0.00 $0.00
Disclosure

SEC source: 0001561550-25-000315 · wk-form4_1762809752.xml · derivative · entry 4

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 255,542

Underlying: Class A Common Stock · 12,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 · derivative.exercise_date: 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 · derivative.expiration_date: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
November 06, 2025 Filed Nov 10, 2025 21:22 UTC Datadog, Inc. DDOG · Entity 2027 SaleClass A Common Stock 12,500 $187.47 $2,343,375.00
Disclosure

SEC source: 0001561550-25-000315 · wk-form4_1762809752.xml · nonDerivative · entry 2

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 12,496

F3 · kind: Shares sold pursuant to a 10b5-1 plan dated December 12, 2024.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
November 06, 2025 Filed Nov 10, 2025 21:22 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass A Common Stock 12,500 $0.00 $0.00
Disclosure

SEC source: 0001561550-25-000315 · wk-form4_1762809752.xml · nonDerivative · entry 1

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 24,996

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
October 14, 2025 Filed Oct 16, 2025 20:15 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass B Common Stock · Derivative 8,333 $0.00 $0.00
Disclosure

SEC source: 0001561550-25-000302 · wk-form4_1760645722.xml · derivative · entry 4

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 268,042

Underlying: Class A Common Stock · 8,333 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 · derivative.exercise_date: 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 · derivative.expiration_date: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
October 14, 2025 Filed Oct 16, 2025 20:15 UTC Datadog, Inc. DDOG · Entity 2027 SaleClass A Common Stock 8,333 $160.55 $1,337,838.15
Disclosure

SEC source: 0001561550-25-000302 · wk-form4_1760645722.xml · nonDerivative · entry 2

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 12,496

F3 · kind: Shares sold pursuant to a 10b5-1 plan dated December 12, 2024.

F4 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $160 to $160.63. 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.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
October 14, 2025 Filed Oct 16, 2025 20:15 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass A Common Stock 8,333 $0.00 $0.00
Disclosure

SEC source: 0001561550-25-000302 · wk-form4_1760645722.xml · nonDerivative · entry 1

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 20,829

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Read SEC document
October 06, 2025 Filed Oct 8, 2025 20:12 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass B Common Stock · Derivative 91,667 $0.00 $0.00
Disclosure

SEC source: 0001561550-25-000296 · wk-form4_1759954335.xml · derivative · entry 4

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 276,375

Underlying: Class A Common Stock · 91,667 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 · derivative.exercise_date: 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 · derivative.expiration_date: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee

Read SEC document
October 06, 2025 Filed Oct 8, 2025 20:12 UTC Datadog, Inc. DDOG · Entity 2027 SaleClass A Common Stock 91,667 $157.60 $14,446,939.20
Disclosure

SEC source: 0001561550-25-000296 · wk-form4_1759954335.xml · nonDerivative · entry 2

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 12,496

F3 · kind: Shares sold pursuant to a 10b5-1 plan dated December 12, 2024.

F4 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $157.4700 to $158.4300. 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.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee

Read SEC document
October 06, 2025 Filed Oct 8, 2025 20:12 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass A Common Stock 91,667 $0.00 $0.00
Disclosure

SEC source: 0001561550-25-000296 · wk-form4_1759954335.xml · nonDerivative · entry 1

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 104,163

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee

Read SEC document
June 03, 2025 Filed Jun 5, 2025 21:00 UTC Datadog, Inc. DDOG · Entity 2027 GrantClass A Common Stock 2,106 $0.00 $0.00
Disclosure

SEC source: 0001561550-25-000172 · wk-form4_1749157008.xml · nonDerivative · entry 1

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,612

F1 · shares: Represents the number of shares underlying Restricted Stock Units ("RSUs") granted pursuant to the Issuer's non-employee director compensation policy. Each RSU represents a contingent right to receive one share of Issuer's Class A common stock. The RSUs vest on the earlier of (A) the Company's next annual meeting of stockholders and (B) June 3, 2026, in each case, subject to the Reporting Person's continuous service to the Issuer through the vesting date.

Read SEC document
June 05, 2024 Filed Jun 7, 2024 21:18 UTC Datadog, Inc. DDOG · Entity 2027 GrantClass A Common Stock 2,262 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-016036 · form4-06072024_090657.xml · nonDerivative · entry 1

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,506

F1 · shares: Represents the number of shares underlying Restricted Stock Units ("RSUs") granted pursuant to the Issuer's non-employee director compensation policy. Each RSU represents a contingent right to receive one share of Issuer's Class A common stock. The RSUs vest on the earlier of (A) the Company's next annual meeting of stockholders and (B) June 5, 2025, in each case, subject to the Reporting Person's continuous service to the Issuer through the vesting date.

Read SEC document
June 08, 2023 Filed Jun 9, 2023 20:19 UTC Datadog, Inc. DDOG · Entity 2027 GrantClass A Common Stock 2,603 $0.00 $0.00
Disclosure

SEC source: 0001209191-23-035813 · doc4.xml · nonDerivative · entry 1

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,244

F1 · shares: Represents the number of shares underlying Restricted Stock Units ("RSUs") granted pursuant to the Issuer's non-employee director compensation policy. Each RSU represents a contingent right to receive one share of Issuer's Class A common stock. The RSUs vest on the earlier of (A) the Company's next annual meeting of stockholders and (B) June 8, 2024, in each case, subject to the Reporting Person's continuous service to the Issuer through the vesting date.

Read SEC document
December 06, 2022 Filed Dec 8, 2022 21:44 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass B Common Stock · Derivative 1,000 $0.00 $0.00
Disclosure

SEC source: 0001209191-22-060364 · doc4.xml · derivative · entry 5

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 1,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 · kind: 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 · derivative.exercise_date: 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 · derivative.expiration_date: 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.

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December 06, 2022 Filed Dec 8, 2022 21:44 UTC Datadog, Inc. DDOG · Entity 2027 Exercise / conversionClass B Common Stock · Derivative 1,000 $0.00 $0.00
Disclosure

SEC source: 0001209191-22-060364 · doc4.xml · derivative · entry 4

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,000

Underlying: Class A Common Stock · 1,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 · derivative.exercise_date: 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 · derivative.expiration_date: 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.

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December 06, 2022 Filed Dec 8, 2022 21:44 UTC Datadog, Inc. DDOG · Entity 2027 Exercise / conversionStock Option (Right to Buy) · Derivative 1,000 $0.00 Strike: $0.91 $0.00
Disclosure

SEC source: 0001209191-22-060364 · doc4.xml · derivative · entry 3

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,182

Underlying: Class B Common Stock · 1,000 shares

Expires 2029-06-28

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_date: Fully vested and exercisable.

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December 06, 2022 Filed Dec 8, 2022 21:44 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass A Common Stock 1,000 $0.91 $909.20
Disclosure

SEC source: 0001209191-22-060364 · doc4.xml · nonDerivative · entry 1

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,641

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: 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.

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June 02, 2022 Filed Jun 6, 2022 22:18 UTC Datadog, Inc. DDOG · Entity 2027 GrantClass A Common Stock 1,816 $0.00 $0.00
Disclosure

SEC source: 0001209191-22-034660 · doc4.xml · nonDerivative · entry 1

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,641

F1 · shares: Represents the number of shares underlying Restricted Stock Units ("RSUs") granted pursuant to the Issuer's non-employee director compensation policy. Each RSU represents a contingent right to receive one share of Issuer's Class A common stock. The RSUs vest on the earlier of (A) the Company's next annual meeting of stockholders and (B) June 2, 2023, in each case, subject to the Reporting Person's continuous service to the Issuer through the vesting date.

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December 06, 2021 Filed Dec 7, 2021 00:34 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass B Common Stock · Derivative 12,496 $0.00 $0.00
Disclosure

SEC source: 0001209191-21-068195 · doc4.xml · derivative · entry 10

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 368,042

Underlying: Class A Common Stock · 12,496 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 · kind: 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 · derivative.exercise_date: 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 · derivative.expiration_date: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

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December 06, 2021 Filed Dec 7, 2021 00:34 UTC Datadog, Inc. DDOG · Entity 2027 GiftClass A Common Stock 250 $0.00 $0.00
Disclosure

SEC source: 0001209191-21-068195 · doc4.xml · nonDerivative · entry 3

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 12,226

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

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December 06, 2021 Filed Dec 7, 2021 00:34 UTC Datadog, Inc. DDOG · Entity 2027 ConversionClass A Common Stock 12,496 $0.00 $0.00
Disclosure

SEC source: 0001209191-21-068195 · doc4.xml · nonDerivative · entry 2

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 12,496

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: 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 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

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December 03, 2021 Filed Dec 7, 2021 00:34 UTC Datadog, Inc. DDOG · Entity 2027 GiftClass B Common Stock · Derivative 18,940 $0.00 $0.00
Disclosure

SEC source: 0001209191-21-068195 · doc4.xml · derivative · entry 9

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 380,538

Underlying: Class A Common Stock · 18,940 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · derivative.exercise_date: 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 · derivative.expiration_date: 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.

F6 · derivative.underlying_shares: Is comprised of 9,470 shares received from each of The Melanie Thernstrom Grantor Retained Annuity Trust and The Michael Callahan Grantor Retained Annuity Trust in distributions to The Callahan-Thernstrom Family Trust.

F2 · ownership.nature: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

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December 03, 2021 Filed Dec 7, 2021 00:34 UTC Datadog, Inc. DDOG · Entity 2027 GiftClass B Common Stock · Derivative 87,504 $0.00 $0.00
Disclosure

SEC source: 0001209191-21-068195 · doc4.xml · derivative · entry 8

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 0

Underlying: Class A Common Stock · 87,504 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · derivative.exercise_date: 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 · derivative.expiration_date: 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.

F5 · ownership.nature: Shares are held by The Michael Callahan Grantor Retained Annuity Trust, of which Reporting Person is Trustee.

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December 03, 2021 Filed Dec 7, 2021 00:34 UTC Datadog, Inc. DDOG · Entity 2027 GiftClass B Common Stock · Derivative 87,504 $0.00 $0.00
Disclosure

SEC source: 0001209191-21-068195 · doc4.xml · derivative · entry 7

Callahan Michael James · CIK 0001784030 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 0

Underlying: Class A Common Stock · 87,504 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · derivative.exercise_date: 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 · derivative.expiration_date: 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.

F4 · ownership.nature: Shares are held directly by The Melanie Thernstrom Grantor Retained Annuity Trust, of which Reporting Person's spouse is Trustee.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.