LE-QUOC ALEXIS (President & CTO) sold 9.6% of their position (53.91K shares) of DATADOG, INC. on the open market

Open‑market sale worth $13.66M — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 25 sales

LE-QUOC ALEXIS

Filed: 8/12/2026ACC: 0001561550-26-000262

InsiderLE-QUOC ALEXISCIK 1783984

→

IssuerDATADOG, INC.CIK 1561550

DirectorOfficer· President & CTO

Since Sep 2019

-53.91K

Net shares

Net seller

$13.66M

Total sold

Open market trades

0B · 25S

Total transactions

72.66K acquired · 126.57K disposed

Non-Derivative Transactions27

Class A Common Stock

Direct

C · Conversion

+43.22K

Price / share

—

Trade value

—

% of position

8.5%

8/10/2026

509.81K→553.03K

Class A Common Stock

Direct

C · Conversion

+10.69K

Price / share

—

Trade value

—

% of position

1.9%

8/10/2026

553.03K→563.72K

Class A Common Stock

Direct

S · Sale

−1.10K

Price / share

$231.15

Trade value

$254.27K

% of position

0.2%

8/10/2026

563.72K→562.62K

Class A Common Stock

Direct

S · Sale

−500.00

Price / share

$232.40

Trade value

$116.20K

% of position

0.1%

8/10/2026

562.62K→562.12K

Class A Common Stock

Direct

S · Sale

−500.00

Price / share

$234.06

Trade value

$117.03K

% of position

0.1%

8/10/2026

562.12K→561.62K

Class A Common Stock

Direct

S · Sale

−900.00

Price / share

$236.18

Trade value

$212.57K

% of position

0.2%

8/10/2026

561.62K→560.72K

Class A Common Stock

Direct

S · Sale

−500.00

Price / share

$237.97

Trade value

$118.98K

% of position

0.1%

8/10/2026

560.72K→560.22K

Class A Common Stock

Direct

S · Sale

−300.00

Price / share

$239.09

Trade value

$71.73K

% of position

0.1%

8/10/2026

560.22K→559.92K

Class A Common Stock

Direct

S · Sale

−300.00

Price / share

$240.74

Trade value

$72.22K

% of position

0.1%

8/10/2026

559.92K→559.62K

Class A Common Stock

Direct

S · Sale

−1.10K

Price / share

$242.95

Trade value

$267.25K

% of position

0.2%

8/10/2026

559.62K→558.52K

Class A Common Stock

Direct

S · Sale

−1.50K

Price / share

$243.97

Trade value

$365.95K

% of position

0.3%

8/10/2026

558.52K→557.02K

Class A Common Stock

Direct

S · Sale

−300.00

Price / share

$244.89

Trade value

$73.47K

% of position

0.1%

8/10/2026

557.02K→556.72K

Class A Common Stock

Direct

S · Sale

−300.00

Price / share

$246.28

Trade value

$73.88K

% of position

0.1%

8/10/2026

556.72K→556.42K

Class A Common Stock

Direct

S · Sale

−1.40K

Price / share

$247.52

Trade value

$346.53K

% of position

0.3%

8/10/2026

556.42K→555.02K

Class A Common Stock

Direct

S · Sale

−3.30K

Price / share

$248.42

Trade value

$819.77K

% of position

0.6%

8/10/2026

555.02K→551.72K

Class A Common Stock

Direct

S · Sale

−4.40K

Price / share

$249.52

Trade value

$1.10M

% of position

0.8%

8/10/2026

551.72K→547.32K

Class A Common Stock

Direct

S · Sale

−1.60K

Price / share

$250.48

Trade value

$400.77K

% of position

0.3%

8/10/2026

547.32K→545.72K

Class A Common Stock

Direct

S · Sale

−1.30K

Price / share

$251.55

Trade value

$327.02K

% of position

0.2%

8/10/2026

545.72K→544.42K

Class A Common Stock

Direct

S · Sale

−2K

Price / share

$252.70

Trade value

$505.40K

% of position

0.4%

8/10/2026

544.42K→542.42K

Class A Common Stock

Direct

S · Sale

−1.40K

Price / share

$253.53

Trade value

$354.95K

% of position

0.3%

8/10/2026

542.42K→541.02K

Class A Common Stock

Direct

S · Sale

−2.61K

Price / share

$255.27

Trade value

$665.74K

% of position

0.5%

8/10/2026

541.02K→538.41K

Class A Common Stock

Direct

S · Sale

−6.87K

Price / share

$256.30

Trade value

$1.76M

% of position

1.3%

8/10/2026

538.41K→531.54K

Class A Common Stock

Direct

S · Sale

−5.53K

Price / share

$257.06

Trade value

$1.42M

% of position

1.0%

8/10/2026

531.54K→526.01K

Class A Common Stock

Direct

S · Sale

−4.60K

Price / share

$258.80

Trade value

$1.19M

% of position

0.9%

8/10/2026

526.01K→521.41K

Class A Common Stock

Direct

S · Sale

−1.80K

Price / share

$259.72

Trade value

$467.50K

% of position

0.3%

8/10/2026

521.41K→519.61K

Class A Common Stock

Direct

S · Sale

−8K

Price / share

$260.73

Trade value

$2.09M

% of position

1.5%

8/10/2026

519.61K→511.61K

Class A Common Stock

Direct

S · Sale

−1.80K

Price / share

$261.33

Trade value

$470.39K

% of position

0.4%

8/10/2026

511.61K→509.81K

Total

Net shares

+0.00

Net value

-$13.66M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	8/10/2026	C · Conversion	+43.22K	—	—	8.5%	509.81K	553.03K
Class A Common Stock Direct	8/10/2026	C · Conversion	+10.69K	—	—	1.9%	553.03K	563.72K
Class A Common Stock Direct	8/10/2026	S · Sale	−1.10K	$231.15	$254.27K	0.2%	563.72K	562.62K
Class A Common Stock Direct	8/10/2026	S · Sale	−500.00	$232.40	$116.20K	0.1%	562.62K	562.12K
Class A Common Stock Direct	8/10/2026	S · Sale	−500.00	$234.06	$117.03K	0.1%	562.12K	561.62K
Class A Common Stock Direct	8/10/2026	S · Sale	−900.00	$236.18	$212.57K	0.2%	561.62K	560.72K
Class A Common Stock Direct	8/10/2026	S · Sale	−500.00	$237.97	$118.98K	0.1%	560.72K	560.22K
Class A Common Stock Direct	8/10/2026	S · Sale	−300.00	$239.09	$71.73K	0.1%	560.22K	559.92K
Class A Common Stock Direct	8/10/2026	S · Sale	−300.00	$240.74	$72.22K	0.1%	559.92K	559.62K
Class A Common Stock Direct	8/10/2026	S · Sale	−1.10K	$242.95	$267.25K	0.2%	559.62K	558.52K
Class A Common Stock Direct	8/10/2026	S · Sale	−1.50K	$243.97	$365.95K	0.3%	558.52K	557.02K
Class A Common Stock Direct	8/10/2026	S · Sale	−300.00	$244.89	$73.47K	0.1%	557.02K	556.72K
Class A Common Stock Direct	8/10/2026	S · Sale	−300.00	$246.28	$73.88K	0.1%	556.72K	556.42K
Class A Common Stock Direct	8/10/2026	S · Sale	−1.40K	$247.52	$346.53K	0.3%	556.42K	555.02K
Class A Common Stock Direct	8/10/2026	S · Sale	−3.30K	$248.42	$819.77K	0.6%	555.02K	551.72K
Class A Common Stock Direct	8/10/2026	S · Sale	−4.40K	$249.52	$1.10M	0.8%	551.72K	547.32K
Class A Common Stock Direct	8/10/2026	S · Sale	−1.60K	$250.48	$400.77K	0.3%	547.32K	545.72K
Class A Common Stock Direct	8/10/2026	S · Sale	−1.30K	$251.55	$327.02K	0.2%	545.72K	544.42K
Class A Common Stock Direct	8/10/2026	S · Sale	−2K	$252.70	$505.40K	0.4%	544.42K	542.42K
Class A Common Stock Direct	8/10/2026	S · Sale	−1.40K	$253.53	$354.95K	0.3%	542.42K	541.02K
Class A Common Stock Direct	8/10/2026	S · Sale	−2.61K	$255.27	$665.74K	0.5%	541.02K	538.41K
Class A Common Stock Direct	8/10/2026	S · Sale	−6.87K	$256.30	$1.76M	1.3%	538.41K	531.54K
Class A Common Stock Direct	8/10/2026	S · Sale	−5.53K	$257.06	$1.42M	1.0%	531.54K	526.01K
Class A Common Stock Direct	8/10/2026	S · Sale	−4.60K	$258.80	$1.19M	0.9%	526.01K	521.41K
Class A Common Stock Direct	8/10/2026	S · Sale	−1.80K	$259.72	$467.50K	0.3%	521.41K	519.61K
Class A Common Stock Direct	8/10/2026	S · Sale	−8K	$260.73	$2.09M	1.5%	519.61K	511.61K
Class A Common Stock Direct	8/10/2026	S · Sale	−1.80K	$261.33	$470.39K	0.4%	511.61K	509.81K
Total			+0.00		-$13.66M

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

150K

Exercisable

—

8/10/2026

Class B Common Stock

Direct

M · Option Exercise

Converts to

Class A Common Stock

18.75K shares

+18.75K

Strike price

Held after

2.34M

Exercisable

—

8/10/2026

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

53.91K shares

−53.91K

Strike price

Held after

2.28M

Exercisable

—

8/10/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (Right to Buy) Direct	Class B Common Stock18.75K shares	8/10/2026	M · Option Exercise	−18.75K	10.74	—	150K
Class B Common Stock Direct	Class A Common Stock18.75K shares	8/10/2026	M · Option Exercise	+18.75K		—	2.34M
Class B Common Stock Direct	Class A Common Stock53.91K shares	8/10/2026	C · Conversion	−53.91K		—	2.28M

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

6.15M

Shares owned

6.15M

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

6.15M

Owned

6.15M

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Class B Common Stock Indirect	Class A Common Stock		—	—	6.15M	6.15M
Total					6.15M	6.15M