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Pay vs Performance Disclosure
U_pure in Thousands

12 Months Ended

Dec. 31, 2023

USD ($)

Dec. 31, 2022

USD ($)

Dec. 31, 2021

USD ($)

Dec. 31, 2020

USD ($)

Pay vs Performance Disclosure

Pay vs Performance Disclosure, Table

We are required by SEC rules to disclose the following information regarding compensation paid to our NEOs (including our principal executive officer(“PEO”), also referred to herein as our “CEO”) as compared to the Company's performance. The amounts set forth below under the headings “Compensation Actually Paid to PEO” and “Average Compensation Actually Paid to Non-PEO NEOs” have been calculated in a manner consistent with Item 402(v) of Regulation S-K. Footnotes (2) and (3) below discuss the adjustments from the Total Compensation for each NEO reported in the Summary Compensation Table above to derive the "compensation actually paid" ("CAP") to each NEO. The following table sets forth additional compensation information of our PEO and our non-PEO NEOs along with total shareholder return ("TSR"), net income, and net sales performance results for fiscal years 2020, 2021, 2022 and 2023:


Pay versus Performance
										Value of Initial Fixed $100 Investment Based On:
Year (a)	Summary Compensation Table Total for PEO (b) (1)		Compensation Actually Paid to PEO (c) (2)			Average Summary Compensation Table Total for Non-PEO NEOs (d)		Average Compensation Actually Paid to Non-PEO NEOs (e) (3)		Total Shareholder Return (f)		Peer Group Total Shareholder Return (g) (4)		Net Income (000) (h)		Net Sales (000) (5)
2023	$	9,483,816	$	13,252,259		$	1,955,936	$	2,683,673	$	114	$	103	$	227,182	$	1,661,739
2022	$	9,045,646	$	(2,249,898	)	$	2,466,178	$	1,048,748	$	135	$	129	$	331,283	$	2,000,580
2021	$	8,137,329	$	30,669,186		$	2,189,740	$	5,627,245	$	195	$	202	$	228,763	$	1,805,162
2020	$	7,856,116	$	21,550,659		$	2,051,918	$	4,438,637	$	125	$	146	$	98,088	$	1,229,215

(1) The dollar amounts reported are the amounts of total compensation reported for our PEO in the Summary Compensation Table for the applicable fiscal year.

(2) (3) The dollar amounts reported represent the amount of CAP, as computed in accordance with SEC rules. The dollar amounts do not reflect the actual amounts of compensation paid to our PEO or other NEOs during the applicable year, but also include (i) the year-end value of equity awards granted during the reported year, and (ii) the change in the value of equity awards that were unvested at the end of the prior year, measured through the date the awards vested or were forfeited, or through the end of the reported fiscal year along with changes in pension value and nonqualified deferred compensation earnings. The tables below provide full details.

(4) Reflects cumulative TSR of the Company's Peer Group (as described above in this Proxy Statement) index, as of the applicable fiscal years. See "Compensation Review Process" for the composition of our Peer Group Companies for the applicable year.

(5) Net Sales is the financial measure that the Company believes to be the most important measure (that is not otherwise required to be disclosed in the table) it used in the most recent fiscal year to link CAP to the NEOs. The Company generates revenue from sales of its semiconductor products to direct customers and distributors and recognizes revenue when control is transferred. Revenues are reduced in the period of sale for estimates of product returns and other allowances including distributor adjustments resulting in net sales.

The PEO and other NEOs included in the above compensation columns are comprised of the following:


Year	PEO	NON-PEO NEOS
2023	Dr. Keh-Shew Lu	Brett R. Whitmire, Gary Yu, Francis Tang, Julie Holland
2022	Dr. Keh-Shew Lu	Brett R. Whitmire, Gary Yu, Francis Tang, Julie Holland
2021	Dr. Keh-Shew Lu	Brett R. Whitmire, Gary Yu, Francis Tang, Julie Holland
2020	Dr. Keh-Shew Lu	Brett R. Whitmire, Francis Tang, Emily Yang, Julie Holland

To calculate the amounts in the "Compensation Actually Paid to PEO" column in the Pay versus Performance table above, the following amounts were deducted from and added to (as applicable) "Total" compensation of our PEO for each applicable year, as reported in the Summary Compensation Table above.


Compensation Actually Paid to PEO
Year	Summary Compensation Table Total for PEO (i)		Minus Reported Value of Equity Awards for PEO (ii)		Plus Equity Award Adjustments for PEO (iii)			Plus Reported Change in Pension Value and Non-qualified Deferred Compensation Earnings ($)		Compensation Actually Paid to PEO
2023	$	9,483,816	$	8,365,620	$	12,133,722		$	341	$	13,252,259
2022	$	9,045,646	$	6,250,510	$	(5,045,133	)	$	99	$	(2,249,898	)
2021		8,137,329		5,468,930		28,000,786			1		30,669,186
2020		7,856,116		5,571,738		19,266,259			22		21,550,659

(i) The dollar amounts reported are the amounts of total compensation reported for our PEO in the Summary Compensation Table for the applicable fiscal year.

(ii) Represents the grant date fair value of the equity awards to our PEO, as reported in the “Stock Awards” column in the Summary Compensation Table for each applicable year.

(iii) Represents the year-over-year change in the fair value of equity awards to our PEO, as itemized in the table below. No awards granted in any year vested in the year they were granted. Fair value or change in fair value, as applicable, of equity awards in the "Compensation Actually Paid" columns was determined by reference to (a) for RSU awards, closing price on applicable year-end dates (b) for PSU awards, the same valuation methodology as RSU awards above except year-end share amounts are multiplied by the probability of achievement as of each such date.


Equity Award Adjustments for PEO
	2023		2022			2021
Fair Value of Equity Awards for PEO
Plus as of year-end value for awards granted during the year	$	10,628,640	$	7,690,140		$	11,090,810
Plus year-over-year change of unvested awards granted in previous years		828,753		(8,169,217	)		9,551,577
Plus change from prior fiscal year-end awards that vested during the year		676,329		(4,566,056	)		7,358,400
Total equity award adjustments		12,133,722		(5,045,133	)		28,000,786

To calculate the amounts in the “Average Compensation Actually Paid to Non-PEO NEOs” column in the Pay versus Performance table above, the following amounts were deducted from and added to (as applicable) the average of the “Total” compensation of our non-PEO NEOs for each applicable year, as reported in the Summary Compensation Table above.


Average Compensation Actually Paid to Non-PEO NEOs
Year	Average Summary Compensation Table Total for Non-PEO NEOs (i)		Minus Average Reported Value of Equity Awards for Non-PEO NEOs (ii)		Plus Average Equity Award Adjustments for Non-PEO NEOs (iii)		Plus Average Reported Change in Pension Value and Non-qualified Deferred Compensation Earnings for Non-PEO NEOs ($)			Average Compensation Actually Paid to Non-PEO NEOs
2023	$	1,955,936	$	1,446,925	$	2,099,234	$	75,428		$	2,683,673
2022	$	2,466,178	$	1,511,591	$	156,437	$	(62,277	)	$	1,048,748
2021	$	2,189,740	$	1,308,927	$	4,615,418	$	131,013		$	5,627,245
2020	$	2,051,918	$	1,313,960	$	3,670,333	$	30,346		$	4,438,637

(i) The dollar amounts reported is the average of the amounts of total compensation reported for our Non-PEO NEOs in the Summary Compensation Table for the applicable fiscal year.

(ii) Represents the grant date fair value of the equity awards to our Non-PEO NEOs, as reported in the “Stock Awards” column in the Summary Compensation Table for each applicable year.

(iii) Represents the year-over-year change in the fair value of equity awards to our Non-PEO NEOS, as itemized in the table below. No awards vested in the year they were granted. Fair value or change in fair value, as applicable, of equity awards in the "Compensation Actually Paid" columns was determined by reference to (a) for RSU awards, closing price on applicable year-end dates (b) for PSU awards, the same valuation methodology as RSU awards above except year-end share amounts are multiplied by the probability of achievement as of each such date.


Average Equity Award Adjustments for Non-PEO NEOs
	2023		2022			2021
Fair Value of Equity Awards for Non-PEO NEOs
Plus as of year-end value for awards granted during the year	$	1,872,090	$	1,878,755		$	2,709,562
Plus year-over-year change of unvested awards granted in previous years		91,255		(885,837	)		919,834
Plus change from prior fiscal year-end awards that vested during the year		135,890		(836,481	)		986,023
Total equity award adjustments		2,099,234		156,437			4,615,418

Company Selected Measure Name

Net Sales

Named Executive Officers, Footnote

The PEO and other NEOs included in the above compensation columns are comprised of the following:


Year	PEO	NON-PEO NEOS
2023	Dr. Keh-Shew Lu	Brett R. Whitmire, Gary Yu, Francis Tang, Julie Holland
2022	Dr. Keh-Shew Lu	Brett R. Whitmire, Gary Yu, Francis Tang, Julie Holland
2021	Dr. Keh-Shew Lu	Brett R. Whitmire, Gary Yu, Francis Tang, Julie Holland
2020	Dr. Keh-Shew Lu	Brett R. Whitmire, Francis Tang, Emily Yang, Julie Holland

Peer Group Issuers, Footnote

Reflects cumulative TSR of the Company's Peer Group (as described above in this Proxy Statement) index, as of the applicable fiscal years. See "Compensation Review Process" for the composition of our Peer Group Companies for the applicable year.

PEO Total Compensation Amount

$ 9,483,816

$ 9,045,646

$ 8,137,329

$ 7,856,116

PEO Actually Paid Compensation Amount

$ 13,252,259

(2,249,898)

30,669,186

21,550,659

Adjustment To PEO Compensation, Footnote


Compensation Actually Paid to PEO
Year	Summary Compensation Table Total for PEO (i)		Minus Reported Value of Equity Awards for PEO (ii)		Plus Equity Award Adjustments for PEO (iii)			Plus Reported Change in Pension Value and Non-qualified Deferred Compensation Earnings ($)		Compensation Actually Paid to PEO
2023	$	9,483,816	$	8,365,620	$	12,133,722		$	341	$	13,252,259
2022	$	9,045,646	$	6,250,510	$	(5,045,133	)	$	99	$	(2,249,898	)
2021		8,137,329		5,468,930		28,000,786			1		30,669,186
2020		7,856,116		5,571,738		19,266,259			22		21,550,659

(i) The dollar amounts reported are the amounts of total compensation reported for our PEO in the Summary Compensation Table for the applicable fiscal year.

(ii) Represents the grant date fair value of the equity awards to our PEO, as reported in the “Stock Awards” column in the Summary Compensation Table for each applicable year.


Equity Award Adjustments for PEO
	2023		2022			2021
Fair Value of Equity Awards for PEO
Plus as of year-end value for awards granted during the year	$	10,628,640	$	7,690,140		$	11,090,810
Plus year-over-year change of unvested awards granted in previous years		828,753		(8,169,217	)		9,551,577
Plus change from prior fiscal year-end awards that vested during the year		676,329		(4,566,056	)		7,358,400
Total equity award adjustments		12,133,722		(5,045,133	)		28,000,786

Non-PEO NEO Average Total Compensation Amount

$ 1,955,936

2,466,178

2,189,740

2,051,918

Non-PEO NEO Average Compensation Actually Paid Amount

$ 2,683,673

1,048,748

5,627,245

4,438,637

Adjustment to Non-PEO NEO Compensation Footnote


Average Compensation Actually Paid to Non-PEO NEOs
Year	Average Summary Compensation Table Total for Non-PEO NEOs (i)		Minus Average Reported Value of Equity Awards for Non-PEO NEOs (ii)		Plus Average Equity Award Adjustments for Non-PEO NEOs (iii)		Plus Average Reported Change in Pension Value and Non-qualified Deferred Compensation Earnings for Non-PEO NEOs ($)			Average Compensation Actually Paid to Non-PEO NEOs
2023	$	1,955,936	$	1,446,925	$	2,099,234	$	75,428		$	2,683,673
2022	$	2,466,178	$	1,511,591	$	156,437	$	(62,277	)	$	1,048,748
2021	$	2,189,740	$	1,308,927	$	4,615,418	$	131,013		$	5,627,245
2020	$	2,051,918	$	1,313,960	$	3,670,333	$	30,346		$	4,438,637

(i) The dollar amounts reported is the average of the amounts of total compensation reported for our Non-PEO NEOs in the Summary Compensation Table for the applicable fiscal year.

(ii) Represents the grant date fair value of the equity awards to our Non-PEO NEOs, as reported in the “Stock Awards” column in the Summary Compensation Table for each applicable year.


Average Equity Award Adjustments for Non-PEO NEOs
	2023		2022			2021
Fair Value of Equity Awards for Non-PEO NEOs
Plus as of year-end value for awards granted during the year	$	1,872,090	$	1,878,755		$	2,709,562
Plus year-over-year change of unvested awards granted in previous years		91,255		(885,837	)		919,834
Plus change from prior fiscal year-end awards that vested during the year		135,890		(836,481	)		986,023
Total equity award adjustments		2,099,234		156,437			4,615,418

Compensation Actually Paid vs. Total Shareholder Return

The following graphs illustrates the relationship of CAP for our PEO and the average CAP for our Non-PEO NEOs in relationship to our Total Shareholder Return ("TSR"), net income and net sales the Company Selected Measure. Additionally, the graphs also describe the relationship between our own TSR versus peer group TSR.

Compensation Actually Paid vs. Net Income

Compensation Actually Paid vs. Company Selected Measure

Total Shareholder Return Vs Peer Group

Tabular List, Table

The three financial performance measures listed in the following table represent an unranked list of the “most important” financial performance measures linking CAP to the NEOs for 2023 and company performance. After net sales, we do not consider any one of the other following financial performance measures to be a more important measure than the other when measuring performance for our company or executive compensation program. See the discussion above in "Compensation Discussion and Analysis" for additional discussion related to executive pay.