DATADOG INC

Ticker: DDOG CUSIP: 23804L103 Class: EQTY

CSS LLC/IL's Holding History (CIK: 0001103646)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 2,579 Value ($000) $351 Avg Close $158.02 Range $135.11 - $201.69

Q3 2025

Shares 3,745 Value ($000) $533 Avg Close $137.70 Range $123.42 - $157.38

Q2 2025

Shares 7,182 Value ($000) $965 Avg Close $110.71 Range $81.63 - $135.41

Q1 2025

Shares 18,836 Value ($000) $1,869 Avg Close $126.18 Range $96.63 - $153.42

Q4 2024

Shares 3,980 Value ($000) $569 Avg Close $137.35 Range $113.08 - $170.08

Q2 2020

Shares 64,600 Value ($000) $5,617 Avg Close $60.88 Range $33.04 - $93.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,579	$351	$158.02	$135.11 - $201.69
Q3 2025	3,745	$533	$137.70	$123.42 - $157.38
Q2 2025	7,182	$965	$110.71	$81.63 - $135.41
Q1 2025	18,836	$1,869	$126.18	$96.63 - $153.42
Q4 2024	3,980	$569	$137.35	$113.08 - $170.08
Q2 2020	64,600	$5,617	$60.88	$33.04 - $93.00