LE-QUOC ALEXIS (President & CTO) sold 12.9% of their position (75.42K shares) of DATADOG, INC. on the open market

Open‑market sale worth $20.36M — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 27 sales

LE-QUOC ALEXIS

Filed: 6/3/2026ACC: 0001561550-26-000171

InsiderLE-QUOC ALEXISCIK 1783984

→

IssuerDATADOG, INC.CIK 1561550

DirectorOfficer· President & CTO

Since Sep 2019

-75.42K

Net shares

Net seller

$20.36M

Total sold

Open market trades

0B · 27S

Total transactions

72.66K acquired · 148.08K disposed

Non-Derivative Transactions29

Class A Common Stock

Direct

C · Conversion

+43.22K

Price / share

—

Trade value

—

% of position

8.1%

6/1/2026

531.31K→574.53K

Class A Common Stock

Direct

C · Conversion

+10.69K

Price / share

—

Trade value

—

% of position

1.9%

6/1/2026

574.53K→585.22K

Class A Common Stock

Direct

S · Sale

−400.00

Price / share

$250.91

Trade value

$100.37K

% of position

0.1%

6/1/2026

585.22K→584.82K

Class A Common Stock

Direct

S · Sale

−600.00

Price / share

$252.34

Trade value

$151.40K

% of position

0.1%

6/1/2026

584.82K→584.22K

Class A Common Stock

Direct

S · Sale

−700.00

Price / share

$253.26

Trade value

$177.28K

% of position

0.1%

6/1/2026

584.22K→583.52K

Class A Common Stock

Direct

S · Sale

−300.00

Price / share

$254.58

Trade value

$76.37K

% of position

0.1%

6/1/2026

583.52K→583.22K

Class A Common Stock

Direct

S · Sale

−300.00

Price / share

$255.57

Trade value

$76.67K

% of position

0.1%

6/1/2026

583.22K→582.92K

Class A Common Stock

Direct

S · Sale

−989.00

Price / share

$257.06

Trade value

$254.23K

% of position

0.2%

6/1/2026

582.92K→581.93K

Class A Common Stock

Direct

S · Sale

−1.82K

Price / share

$257.96

Trade value

$468.96K

% of position

0.3%

6/1/2026

581.93K→580.12K

Class A Common Stock

Direct

S · Sale

−3.12K

Price / share

$259.09

Trade value

$808.09K

% of position

0.5%

6/1/2026

580.12K→577K

Class A Common Stock

Direct

S · Sale

−1.40K

Price / share

$259.95

Trade value

$363.93K

% of position

0.2%

6/1/2026

577K→575.60K

Class A Common Stock

Direct

S · Sale

−100.00

Price / share

$261.01

Trade value

$26.10K

% of position

0.0%

6/1/2026

575.60K→575.50K

Class A Common Stock

Direct

S · Sale

−1.60K

Price / share

$262.89

Trade value

$420.62K

% of position

0.3%

6/1/2026

575.50K→573.90K

Class A Common Stock

Direct

S · Sale

−1.34K

Price / share

$263.69

Trade value

$352.29K

% of position

0.2%

6/1/2026

573.90K→572.56K

Class A Common Stock

Direct

S · Sale

−923.00

Price / share

$264.72

Trade value

$244.34K

% of position

0.2%

6/1/2026

572.56K→571.64K

Class A Common Stock

Direct

S · Sale

−917.00

Price / share

$265.82

Trade value

$243.75K

% of position

0.2%

6/1/2026

571.64K→570.72K

Class A Common Stock

Direct

S · Sale

−715.00

Price / share

$266.98

Trade value

$190.89K

% of position

0.1%

6/1/2026

570.72K→570.01K

Class A Common Stock

Direct

S · Sale

−642.00

Price / share

$267.78

Trade value

$171.92K

% of position

0.1%

6/1/2026

570.01K→569.36K

Class A Common Stock

Direct

S · Sale

−1.01K

Price / share

$268.82

Trade value

$272.05K

% of position

0.2%

6/1/2026

569.36K→568.35K

Class A Common Stock

Direct

S · Sale

−1.56K

Price / share

$270.37

Trade value

$421.50K

% of position

0.3%

6/1/2026

568.35K→566.79K

Class A Common Stock

Direct

S · Sale

−929.00

Price / share

$271.42

Trade value

$252.15K

% of position

0.2%

6/1/2026

566.79K→565.86K

Class A Common Stock

Direct

S · Sale

−3.72K

Price / share

$272.56

Trade value

$1.01M

% of position

0.7%

6/1/2026

565.86K→562.14K

Class A Common Stock

Direct

S · Sale

−2.59K

Price / share

$273.42

Trade value

$708.98K

% of position

0.5%

6/1/2026

562.14K→559.55K

Class A Common Stock

Direct

S · Sale

−1K

Price / share

$274.58

Trade value

$274.86K

% of position

0.2%

6/1/2026

559.55K→558.55K

Class A Common Stock

Direct

S · Sale

−4.55K

Price / share

$276.02

Trade value

$1.26M

% of position

0.8%

6/1/2026

558.55K→554K

Class A Common Stock

Direct

S · Sale

−15.87K

Price / share

$276.72

Trade value

$4.39M

% of position

2.9%

6/1/2026

554K→538.13K

Class A Common Stock

Direct

S · Sale

−6.36K

Price / share

$277.77

Trade value

$1.77M

% of position

1.2%

6/1/2026

538.13K→531.77K

Class A Common Stock

Direct

S · Sale

−457.00

Price / share

$278.52

Trade value

$127.28K

% of position

0.1%

6/1/2026

531.77K→531.31K

Class A Common Stock

Direct

S · Sale

−21.51K

Price / share

$267.15

Trade value

$5.75M

% of position

4.0%

6/2/2026

531.31K→509.81K

Total

Net shares

−21.51K

Net value

-$20.36M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	6/1/2026	C · Conversion	+43.22K	—	—	8.1%	531.31K	574.53K
Class A Common Stock Direct	6/1/2026	C · Conversion	+10.69K	—	—	1.9%	574.53K	585.22K
Class A Common Stock Direct	6/1/2026	S · Sale	−400.00	$250.91	$100.37K	0.1%	585.22K	584.82K
Class A Common Stock Direct	6/1/2026	S · Sale	−600.00	$252.34	$151.40K	0.1%	584.82K	584.22K
Class A Common Stock Direct	6/1/2026	S · Sale	−700.00	$253.26	$177.28K	0.1%	584.22K	583.52K
Class A Common Stock Direct	6/1/2026	S · Sale	−300.00	$254.58	$76.37K	0.1%	583.52K	583.22K
Class A Common Stock Direct	6/1/2026	S · Sale	−300.00	$255.57	$76.67K	0.1%	583.22K	582.92K
Class A Common Stock Direct	6/1/2026	S · Sale	−989.00	$257.06	$254.23K	0.2%	582.92K	581.93K
Class A Common Stock Direct	6/1/2026	S · Sale	−1.82K	$257.96	$468.96K	0.3%	581.93K	580.12K
Class A Common Stock Direct	6/1/2026	S · Sale	−3.12K	$259.09	$808.09K	0.5%	580.12K	577K
Class A Common Stock Direct	6/1/2026	S · Sale	−1.40K	$259.95	$363.93K	0.2%	577K	575.60K
Class A Common Stock Direct	6/1/2026	S · Sale	−100.00	$261.01	$26.10K	0.0%	575.60K	575.50K
Class A Common Stock Direct	6/1/2026	S · Sale	−1.60K	$262.89	$420.62K	0.3%	575.50K	573.90K
Class A Common Stock Direct	6/1/2026	S · Sale	−1.34K	$263.69	$352.29K	0.2%	573.90K	572.56K
Class A Common Stock Direct	6/1/2026	S · Sale	−923.00	$264.72	$244.34K	0.2%	572.56K	571.64K
Class A Common Stock Direct	6/1/2026	S · Sale	−917.00	$265.82	$243.75K	0.2%	571.64K	570.72K
Class A Common Stock Direct	6/1/2026	S · Sale	−715.00	$266.98	$190.89K	0.1%	570.72K	570.01K
Class A Common Stock Direct	6/1/2026	S · Sale	−642.00	$267.78	$171.92K	0.1%	570.01K	569.36K
Class A Common Stock Direct	6/1/2026	S · Sale	−1.01K	$268.82	$272.05K	0.2%	569.36K	568.35K
Class A Common Stock Direct	6/1/2026	S · Sale	−1.56K	$270.37	$421.50K	0.3%	568.35K	566.79K
Class A Common Stock Direct	6/1/2026	S · Sale	−929.00	$271.42	$252.15K	0.2%	566.79K	565.86K
Class A Common Stock Direct	6/1/2026	S · Sale	−3.72K	$272.56	$1.01M	0.7%	565.86K	562.14K
Class A Common Stock Direct	6/1/2026	S · Sale	−2.59K	$273.42	$708.98K	0.5%	562.14K	559.55K
Class A Common Stock Direct	6/1/2026	S · Sale	−1K	$274.58	$274.86K	0.2%	559.55K	558.55K
Class A Common Stock Direct	6/1/2026	S · Sale	−4.55K	$276.02	$1.26M	0.8%	558.55K	554K
Class A Common Stock Direct	6/1/2026	S · Sale	−15.87K	$276.72	$4.39M	2.9%	554K	538.13K
Class A Common Stock Direct	6/1/2026	S · Sale	−6.36K	$277.77	$1.77M	1.2%	538.13K	531.77K
Class A Common Stock Direct	6/1/2026	S · Sale	−457.00	$278.52	$127.28K	0.1%	531.77K	531.31K
Class A Common Stock Direct	6/2/2026	S · Sale	−21.51K	$267.15	$5.75M	4.0%	531.31K	509.81K
Total			−21.51K		-$20.36M

Derivative Transactions3

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class B Common Stock

18.75K shares

−18.75K

Strike price

10.74

Held after

187.50K

Exercisable

—

6/1/2026

Class B Common Stock

Direct

M · Option Exercise

Converts to

Class A Common Stock

18.75K shares

+18.75K

Strike price

Held after

2.49M

Exercisable

—

6/1/2026

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

53.91K shares

−53.91K

Strike price

Held after

2.44M

Exercisable

—

6/1/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (Right to Buy) Direct	Class B Common Stock18.75K shares	6/1/2026	M · Option Exercise	−18.75K	10.74	—	187.50K
Class B Common Stock Direct	Class A Common Stock18.75K shares	6/1/2026	M · Option Exercise	+18.75K		—	2.49M
Class B Common Stock Direct	Class A Common Stock53.91K shares	6/1/2026	C · Conversion	−53.91K		—	2.44M

Non-Derivative Holdings (Post-Transaction)1

Class A Common Stock

Indirect

Shares owned169.00

Total

169.00 indirect169.00

Security Title	Shares Owned	Ownership Type
Class A Common Stock	169.00	Indirect
Total	169.00	169.00 indirect

Derivative Holdings (Post-Transaction)1

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

6.20M

Shares owned

6.20M

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

6.20M

Owned

6.20M

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Class B Common Stock Indirect	Class A Common Stock		—	—	6.20M	6.20M
Total					6.20M	6.20M