ON SEMICONDUCTOR CORP

Ticker: ON CUSIP: 682189105 Class: EQTY

GATEWAY INVESTMENT ADVISERS LLC's Holding History (CIK: 0001114618)

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

Q4 2025

Shares 102,761 Value ($000) $5,565 Avg Close $51.30 Range $44.56 - $57.52

Q3 2025

Shares 102,492 Value ($000) $5,054 Avg Close $52.63 Range $46.35 - $63.63

Q2 2025

Shares 146,360 Value ($000) $7,671 Avg Close $43.47 Range $31.04 - $55.01

Q1 2025

Shares 100,753 Value ($000) $4,100 Avg Close $50.33 Range $39.36 - $67.00

Q4 2024

Shares 37,876 Value ($000) $2,388 Avg Close $68.91 Range $62.78 - $76.06

Q3 2024

Shares 37,988 Value ($000) $2,758 Avg Close $72.80 Range $66.18 - $80.08

Q2 2024

Shares 42,682 Value ($000) $2,926 Avg Close $70.16 Range $59.34 - $77.22

Q1 2024

Shares 50,193 Value ($000) $3,692 Avg Close $76.54 Range $68.78 - $85.16

Q4 2023

Shares 49,008 Value ($000) $4,094 Avg Close $78.58 Range $61.47 - $95.64

Q3 2023

Shares 49,109 Value ($000) $4,565 Avg Close $97.14 Range $88.63 - $111.35

Q2 2023

Shares 48,067 Value ($000) $4,546 Avg Close $82.71 Range $66.67 - $95.32

Q1 2023

Shares 49,453 Value ($000) $4,071 Avg Close $75.97 Range $59.61 - $87.55

Q4 2022

Shares 48,481 Value ($000) $3,024 Avg Close $66.70 Range $54.93 - $77.28

Q3 2022

Shares 47,335 Value ($000) $2,950 Avg Close $64.40 Range $44.76 - $76.78

Q2 2022

Shares 43,637 Value ($000) $2,195 Avg Close $55.72 Range $49.35 - $67.19

Q1 2022

Shares 37,624 Value ($000) $2,356 Avg Close $60.97 Range $51.02 - $71.26

Q4 2021

Shares 37,891 Value ($000) $2,574 Avg Close $56.65 Range $41.88 - $70.27

Q3 2021

Shares 37,824 Value ($000) $1,731 Avg Close $42.74 Range $34.01 - $49.78

Q2 2021

Shares 36,091 Value ($000) $1,382 Avg Close $39.26 Range $35.12 - $44.59

Q1 2020

Shares 71,964 Value ($000) $895 Avg Close $19.56 Range $8.17 - $25.92

Q4 2019

Shares 73,194 Value ($000) $1,784 Avg Close $21.12 Range $17.04 - $24.70

Q3 2019

Shares 73,940 Value ($000) $1,420 Avg Close $19.23 Range $16.65 - $22.36

Q2 2019

Shares 77,405 Value ($000) $1,564 Avg Close $20.66 Range $17.31 - $23.54

Q1 2019

Shares 77,343 Value ($000) $1,591 Avg Close $20.63 Range $15.57 - $23.35

Q4 2018

Shares 76,864 Value ($000) $1,269 Avg Close $17.29 Range $14.55 - $20.06

Q3 2018

Shares 46,091 Value ($000) $849 Avg Close $21.37 Range $18.06 - $24.31

Q2 2018

Shares 46,091 Value ($000) $1,025 Avg Close $24.17 Range $21.45 - $26.38

Q1 2018

Shares 46,091 Value ($000) $1,127 Avg Close $24.12 Range $20.21 - $27.10

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	102,761	$5,565	$51.30	$44.56 - $57.52
Q3 2025	102,492	$5,054	$52.63	$46.35 - $63.63
Q2 2025	146,360	$7,671	$43.47	$31.04 - $55.01
Q1 2025	100,753	$4,100	$50.33	$39.36 - $67.00
Q4 2024	37,876	$2,388	$68.91	$62.78 - $76.06
Q3 2024	37,988	$2,758	$72.80	$66.18 - $80.08
Q2 2024	42,682	$2,926	$70.16	$59.34 - $77.22
Q1 2024	50,193	$3,692	$76.54	$68.78 - $85.16
Q4 2023	49,008	$4,094	$78.58	$61.47 - $95.64
Q3 2023	49,109	$4,565	$97.14	$88.63 - $111.35
Q2 2023	48,067	$4,546	$82.71	$66.67 - $95.32
Q1 2023	49,453	$4,071	$75.97	$59.61 - $87.55
Q4 2022	48,481	$3,024	$66.70	$54.93 - $77.28
Q3 2022	47,335	$2,950	$64.40	$44.76 - $76.78
Q2 2022	43,637	$2,195	$55.72	$49.35 - $67.19
Q1 2022	37,624	$2,356	$60.97	$51.02 - $71.26
Q4 2021	37,891	$2,574	$56.65	$41.88 - $70.27
Q3 2021	37,824	$1,731	$42.74	$34.01 - $49.78
Q2 2021	36,091	$1,382	$39.26	$35.12 - $44.59
Q1 2020	71,964	$895	$19.56	$8.17 - $25.92
Q4 2019	73,194	$1,784	$21.12	$17.04 - $24.70
Q3 2019	73,940	$1,420	$19.23	$16.65 - $22.36
Q2 2019	77,405	$1,564	$20.66	$17.31 - $23.54
Q1 2019	77,343	$1,591	$20.63	$15.57 - $23.35
Q4 2018	76,864	$1,269	$17.29	$14.55 - $20.06
Q3 2018	46,091	$849	$21.37	$18.06 - $24.31
Q2 2018	46,091	$1,025	$24.17	$21.45 - $26.38
Q1 2018	46,091	$1,127	$24.12	$20.21 - $27.10