KLAVIYO INC

Ticker: KVYO CUSIP: 49845K101 Class: Common Stock

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2025

Shares 13,301 Value ($000) $432 Avg Close $28.01 Range $23.44 - $33.35

Q4 2024

Shares 2,415 Value ($000) $100 Avg Close $38.18 Range $32.02 - $44.77

Q3 2024

Shares 3,887 Value ($000) $138 Avg Close $28.98 Range $22.12 - $36.47

Q2 2024

Shares 1,947 Value ($000) $48 Avg Close $23.40 Range $21.26 - $25.78

Q1 2024

Shares 6,322 Value ($000) $161 Avg Close $26.71 Range $22.82 - $32.40

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	13,301	$432	$28.01	$23.44 - $33.35
Q4 2024	2,415	$100	$38.18	$32.02 - $44.77
Q3 2024	3,887	$138	$28.98	$22.12 - $36.47
Q2 2024	1,947	$48	$23.40	$21.26 - $25.78
Q1 2024	6,322	$161	$26.71	$22.82 - $32.40