ON SEMICONDUCTOR CORP

Ticker: ON CUSIP: 682189105 Class: EQTY

Calamos Advisors LLC's Holding History (CIK: 0001316507)

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

Q4 2025

Shares 106,728 Value ($000) $5,779 Avg Close $51.30 Range $44.56 - $57.52

Q3 2025

Shares 111,063 Value ($000) $5,477 Avg Close $52.63 Range $46.35 - $63.63

Q2 2025

Shares 111,063 Value ($000) $5,821 Avg Close $43.47 Range $31.04 - $55.01

Q1 2025

Shares 111,063 Value ($000) $4,519 Avg Close $50.33 Range $39.36 - $67.00

Q4 2024

Shares 109,826 Value ($000) $6,925 Avg Close $68.91 Range $62.78 - $76.06

Q3 2024

Shares 109,826 Value ($000) $7,974 Avg Close $72.80 Range $66.18 - $80.08

Q2 2024

Shares 112,521 Value ($000) $7,713 Avg Close $70.16 Range $59.34 - $77.22

Q1 2024

Shares 116,628 Value ($000) $8,578 Avg Close $76.54 Range $68.78 - $85.16

Q4 2023

Shares 119,561 Value ($000) $9,987 Avg Close $78.58 Range $61.47 - $95.64

Q3 2023

Shares 121,122 Value ($000) $11,258 Avg Close $97.14 Range $88.63 - $111.35

Q2 2023

Shares 121,122 Value ($000) $11,456 Avg Close $82.71 Range $66.67 - $95.32

Q1 2023

Shares 121,122 Value ($000) $9,971 Avg Close $75.97 Range $59.61 - $87.55

Q4 2022

Shares 136,779 Value ($000) $8,531 Avg Close $66.70 Range $54.93 - $77.28

Q2 2022

Shares 26,923 Value ($000) $1,354 Avg Close $55.72 Range $49.35 - $67.19

Q3 2021

Shares 14,753 Value ($000) $675 Avg Close $42.74 Range $34.01 - $49.78

Q1 2021

Shares 28,317 Value ($000) $1,178 Avg Close $38.38 Range $32.32 - $42.38

Q1 2019

Shares 22,000 Value ($000) $453 Avg Close $20.63 Range $15.57 - $23.35

Q4 2017

Shares 50,700 Value ($000) $1,062 Avg Close $20.40 Range $18.52 - $22.15

Q3 2017

Shares 86,400 Value ($000) $1,596 Avg Close $16.09 Range $13.65 - $18.49

Q2 2017

Shares 98,200 Value ($000) $1,379 Avg Close $15.03 Range $13.77 - $16.93

Q1 2017

Shares 908,312 Value ($000) $14,070 Avg Close $14.50 Range $12.37 - $16.06

Q4 2014

Shares 52,025 Value ($000) $527 Avg Close $8.78 Range $6.76 - $10.44

Q3 2014

Shares 54,605 Value ($000) $488 Avg Close $9.24 Range $8.32 - $9.94

Q3 2013

Shares 58,200 Value ($000) $425 Avg Close $7.67 Range $7.16 - $8.50

Q2 2013

Shares 89,600 Value ($000) $724 Avg Close $8.02 Range $7.18 - $8.73

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	106,728	$5,779	$51.30	$44.56 - $57.52
Q3 2025	111,063	$5,477	$52.63	$46.35 - $63.63
Q2 2025	111,063	$5,821	$43.47	$31.04 - $55.01
Q1 2025	111,063	$4,519	$50.33	$39.36 - $67.00
Q4 2024	109,826	$6,925	$68.91	$62.78 - $76.06
Q3 2024	109,826	$7,974	$72.80	$66.18 - $80.08
Q2 2024	112,521	$7,713	$70.16	$59.34 - $77.22
Q1 2024	116,628	$8,578	$76.54	$68.78 - $85.16
Q4 2023	119,561	$9,987	$78.58	$61.47 - $95.64
Q3 2023	121,122	$11,258	$97.14	$88.63 - $111.35
Q2 2023	121,122	$11,456	$82.71	$66.67 - $95.32
Q1 2023	121,122	$9,971	$75.97	$59.61 - $87.55
Q4 2022	136,779	$8,531	$66.70	$54.93 - $77.28
Q2 2022	26,923	$1,354	$55.72	$49.35 - $67.19
Q3 2021	14,753	$675	$42.74	$34.01 - $49.78
Q1 2021	28,317	$1,178	$38.38	$32.32 - $42.38
Q1 2019	22,000	$453	$20.63	$15.57 - $23.35
Q4 2017	50,700	$1,062	$20.40	$18.52 - $22.15
Q3 2017	86,400	$1,596	$16.09	$13.65 - $18.49
Q2 2017	98,200	$1,379	$15.03	$13.77 - $16.93
Q1 2017	908,312	$14,070	$14.50	$12.37 - $16.06
Q4 2014	52,025	$527	$8.78	$6.76 - $10.44
Q3 2014	54,605	$488	$9.24	$8.32 - $9.94
Q3 2013	58,200	$425	$7.67	$7.16 - $8.50
Q2 2013	89,600	$724	$8.02	$7.18 - $8.73