FIVE9 INC

Ticker: FIVN CUSIP: 338307101 Class: Common Stock

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

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

Q4 2025

Shares 110,505 Value ($000) $2,216 Avg Close $21.23 Range $17.71 - $24.96

Q3 2025

Shares 46,667 Value ($000) $1,129 Avg Close $26.44 Range $23.68 - $29.71

Q2 2025

Shares 37,651 Value ($000) $997 Avg Close $26.02 Range $21.04 - $30.38

Q1 2025

Shares 2,569 Value ($000) $70 Avg Close $36.67 Range $26.48 - $49.90

Q4 2024

Shares 2,218 Value ($000) $90 Avg Close $36.07 Range $27.00 - $44.36

Q3 2024

Shares 10,051 Value ($000) $289 Avg Close $36.09 Range $26.60 - $47.13

Q2 2024

Shares 21,935 Value ($000) $967 Avg Close $51.96 Range $39.07 - $63.30

Q1 2024

Shares 28,219 Value ($000) $1,753 Avg Close $69.48 Range $56.49 - $81.24

Q4 2023

Shares 70,065 Value ($000) $5,513 Avg Close $69.64 Range $54.66 - $92.40

Q3 2023

Shares 7,180 Value ($000) $462 Avg Close $74.83 Range $62.38 - $89.58

Q2 2023

Shares 21,442 Value ($000) $1,768 Avg Close $67.12 Range $51.01 - $83.49

Q3 2022

Shares 5,607 Value ($000) $420 Avg Close $97.14 Range $74.48 - $120.39

Q2 2022

Shares 35,094 Value ($000) $3,198 Avg Close $101.15 Range $81.16 - $121.17

Q1 2022

Shares 78,085 Value ($000) $8,621 Avg Close $116.40 Range $80.52 - $144.24

Q4 2021

Shares 71,710 Value ($000) $9,847 Avg Close $147.91 Range $122.33 - $170.73

Q3 2021

Shares 43,084 Value ($000) $6,882 Avg Close $182.48 Range $155.06 - $211.68

Q3 2020

Shares 7,951 Value ($000) $1,031 Avg Close $120.26 Range $107.10 - $131.98

Q2 2020

Shares 4,186 Value ($000) $463 Avg Close $97.33 Range $71.68 - $111.25

Q1 2019

Shares 6,974 Value ($000) $368 Avg Close $50.84 Range $40.82 - $57.90

Q4 2018

Shares 12,964 Value ($000) $567 Avg Close $40.23 Range $34.66 - $45.58

Q3 2018

Shares 59,253 Value ($000) $2,589 Avg Close $41.24 Range $31.64 - $49.50

Q2 2018

Shares 2,693 Value ($000) $93 Avg Close $32.37 Range $26.92 - $39.55

Q1 2018

Shares 3,319 Value ($000) $99 Avg Close $27.39 Range $22.55 - $32.47

Q2 2017

Shares 10,441 Value ($000) $225 Avg Close $20.49 Range $16.30 - $24.80

Q1 2017

Shares 277 Value ($000) $5 Avg Close $16.41 Range $14.00 - $18.93

Q4 2016

Shares 277 Value ($000) $4 Avg Close $14.41 Range $12.58 - $16.40

Q3 2016

Shares 100 Value ($000) $2 Avg Close $13.65 Range $11.46 - $16.23

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	110,505	$2,216	$21.23	$17.71 - $24.96
Q3 2025	46,667	$1,129	$26.44	$23.68 - $29.71
Q2 2025	37,651	$997	$26.02	$21.04 - $30.38
Q1 2025	2,569	$70	$36.67	$26.48 - $49.90
Q4 2024	2,218	$90	$36.07	$27.00 - $44.36
Q3 2024	10,051	$289	$36.09	$26.60 - $47.13
Q2 2024	21,935	$967	$51.96	$39.07 - $63.30
Q1 2024	28,219	$1,753	$69.48	$56.49 - $81.24
Q4 2023	70,065	$5,513	$69.64	$54.66 - $92.40
Q3 2023	7,180	$462	$74.83	$62.38 - $89.58
Q2 2023	21,442	$1,768	$67.12	$51.01 - $83.49
Q3 2022	5,607	$420	$97.14	$74.48 - $120.39
Q2 2022	35,094	$3,198	$101.15	$81.16 - $121.17
Q1 2022	78,085	$8,621	$116.40	$80.52 - $144.24
Q4 2021	71,710	$9,847	$147.91	$122.33 - $170.73
Q3 2021	43,084	$6,882	$182.48	$155.06 - $211.68
Q3 2020	7,951	$1,031	$120.26	$107.10 - $131.98
Q2 2020	4,186	$463	$97.33	$71.68 - $111.25
Q1 2019	6,974	$368	$50.84	$40.82 - $57.90
Q4 2018	12,964	$567	$40.23	$34.66 - $45.58
Q3 2018	59,253	$2,589	$41.24	$31.64 - $49.50
Q2 2018	2,693	$93	$32.37	$26.92 - $39.55
Q1 2018	3,319	$99	$27.39	$22.55 - $32.47
Q2 2017	10,441	$225	$20.49	$16.30 - $24.80
Q1 2017	277	$5	$16.41	$14.00 - $18.93
Q4 2016	277	$4	$14.41	$12.58 - $16.40
Q3 2016	100	$2	$13.65	$11.46 - $16.23