KLAVIYO INC

Ticker: KVYO CUSIP: 49845K101 Class: Common Stock

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND's Holding History (CIK: 0001535845)

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

Q4 2025

Shares 461,931 Value ($000) $14,999 Avg Close $28.01 Range $23.44 - $33.35

Q3 2025

Shares 1,050,543 Value ($000) $29,090 Avg Close $32.29 Range $27.66 - $36.76

Q2 2025

Shares 827,900 Value ($000) $27,801 Avg Close $31.68 Range $23.77 - $37.79

Q1 2025

Shares 322,600 Value ($000) $9,762 Avg Close $40.34 Range $29.15 - $49.55

Q4 2024

Shares 419,600 Value ($000) $17,304 Avg Close $38.18 Range $32.02 - $44.77

Q3 2023

Shares 80,000 Value ($000) $2,760 Avg Close $34.31 Range $30.26 - $39.47

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	461,931	$14,999	$28.01	$23.44 - $33.35
Q3 2025	1,050,543	$29,090	$32.29	$27.66 - $36.76
Q2 2025	827,900	$27,801	$31.68	$23.77 - $37.79
Q1 2025	322,600	$9,762	$40.34	$29.15 - $49.55
Q4 2024	419,600	$17,304	$38.18	$32.02 - $44.77
Q3 2023	80,000	$2,760	$34.31	$30.26 - $39.47