David Mh Matthews

CIK 1583135 · View on SEC EDGAR ↗

Insider

First SEC filing: May 28, 2024 · Latest: May 28, 2024

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 23 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

23 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
May 28, 2024 POWI S 9,500 $77.17 $733,115 53,729 Direct -15.02% Disposed -28.5% (price as of 2026-08-20)
May 20, 2024 POWI S 5,000 $76.88 $384,400 63,229 Direct -7.33% Disposed -28.2% (price as of 2026-08-20)
April 2, 2024 POWI S 1,153 $69.04 $79,603 68,229 Direct -1.66% Disposed -20.1% (price as of 2026-08-20)
Feb. 13, 2024 POWI S 554 $75.23 $41,677 59,793 Direct -0.92% Disposed -26.7% (price as of 2026-08-20)
Feb. 12, 2024 POWI S 851 $80.06 $68,131 58,882 Direct -1.42% Disposed -31.1% (price as of 2026-08-20)
Feb. 6, 2024 POWI S 1,095 $73.96 $80,986 59,733 Direct -1.80% Disposed -25.4% (price as of 2026-08-20)
Feb. 5, 2024 POWI S 749 $75.42 $56,490 60,828 Direct -1.22% Disposed -26.8% (price as of 2026-08-20)
Feb. 2, 2024 POWI S 766 $74.49 $57,059 61,566 Direct -1.23% Disposed -25.9% (price as of 2026-08-20)
Feb. 2, 2024 POWI S 755 $75.58 $57,063 61,577 Direct -1.21% Disposed -27.0% (price as of 2026-08-20)
Nov. 22, 2023 POWI S 6,994 $77.69 $543,364 62,200 Direct -10.11% Disposed -29.0% (price as of 2026-08-20)
Nov. 14, 2023 POWI S 5,475 $76.14 $416,866 69,194 Direct -7.33% Disposed -27.5% (price as of 2026-08-20)
Aug. 30, 2023 POWI S 6,017 $84.28 $507,113 74,669 Direct -7.46% Disposed -34.5% (price as of 2026-08-20)
Aug. 22, 2023 POWI S 8,647 $82.62 $714,415 80,686 Direct -9.68% Disposed -33.2% (price as of 2026-08-20)
May 30, 2023 POWI S 4,429 $88.55 $392,188 89,193 Direct -4.73% Disposed -37.7% (price as of 2026-08-20)
May 22, 2023 POWI S 6,000 $86.61 $519,660 93,622 Direct -6.02% Disposed -36.3% (price as of 2026-08-20)
April 4, 2023 POWI S 1,550 $81.46 $126,263 99,622 Direct -1.53% Disposed -32.3% (price as of 2026-08-20)
Feb. 27, 2023 POWI S 5,964 $82.47 $491,851 101,172 Direct -5.57% Disposed -33.1% (price as of 2026-08-20)
Feb. 14, 2023 POWI S 1,886 $83.97 $158,367 107,136 Direct -1.73% Disposed -34.3% (price as of 2026-08-20)
Feb. 8, 2023 POWI S 444 $84.96 $37,722 100,622 Direct -0.44% Disposed -35.1% (price as of 2026-08-20)
Feb. 8, 2023 POWI S 527 $84.96 $44,774 101,066 Direct -0.52% Disposed -35.1% (price as of 2026-08-20)
Feb. 7, 2023 POWI S 1,120 $83.18 $93,162 98,829 Direct -1.12% Disposed -33.7% (price as of 2026-08-20)
Feb. 3, 2023 POWI S 724 $91.05 $65,920 99,949 Direct -0.72% Disposed -39.4% (price as of 2026-08-20)
Feb. 2, 2023 POWI S 711 $89.80 $63,848 100,673 Direct -0.70% Disposed -38.6% (price as of 2026-08-20)
Nov. 29, 2022 POWI S 5,000 $76.64 $383,200 101,233 Direct -4.71% Disposed -28.0% (price as of 2026-08-20)
Nov. 11, 2022 POWI S 5,948 $78.29 $465,669 106,233 Direct -5.30% Disposed -29.5% (price as of 2026-08-20)
May 31, 2022 POWI S 6,168 $83.84 $517,125 112,025 Direct -5.22% Disposed -34.2% (price as of 2026-08-20)
May 17, 2022 POWI S 3,984 $85.29 $339,795 118,193 Direct -3.26% Disposed -35.3% (price as of 2026-08-20)
April 4, 2022 POWI S 1,502 $91.23 $137,027 122,177 Direct -1.21% Disposed -39.5% (price as of 2026-08-20)
Feb. 28, 2022 POWI S 2,500 $89.79 $224,475 123,679 Direct -1.98% Disposed -38.6% (price as of 2026-08-20)
Feb. 14, 2022 POWI S 2,165 $84.28 $182,466 116,270 Direct -1.83% Disposed -34.5% (price as of 2026-08-20)
Feb. 14, 2022 POWI S 2,091 $84.28 $176,229 114,179 Direct -1.80% Disposed -34.5% (price as of 2026-08-20)
Feb. 8, 2022 POWI S 4,606 $85.32 $392,984 118,435 Direct -3.74% Disposed -35.3% (price as of 2026-08-20)
Feb. 8, 2022 POWI S 2,247 $85.32 $191,714 123,041 Direct -1.79% Disposed -35.3% (price as of 2026-08-20)
Feb. 7, 2022 POWI S 1,029 $83.48 $85,901 109,088 Direct -0.93% Disposed -33.9% (price as of 2026-08-20)
Feb. 2, 2022 POWI S 724 $79.66 $57,674 101,717 Direct -0.71% Disposed -30.7% (price as of 2026-08-20)
Nov. 16, 2021 POWI S 2,500 $108.01 $270,025 102,311 Direct -2.39% Disposed -48.9% (price as of 2026-08-20)
Aug. 30, 2021 POWI S 1,500 $110.08 $165,120 104,811 Direct -1.41% Disposed -49.9% (price as of 2026-08-20)
Aug. 25, 2021 POWI S 2,500 $104.41 $261,025 106,311 Direct -2.30% Disposed -47.2% (price as of 2026-08-20)
April 5, 2021 POWI S 1,510 $84.41 $127,459 108,663 Direct -1.37% Disposed -34.6% (price as of 2026-08-20)
Feb. 17, 2021 POWI S 2,171 $89.03 $193,284 110,173 Direct -1.93% Disposed -38.0% (price as of 2026-08-20)
Feb. 16, 2021 POWI S 2,130 $93.98 $200,177 112,344 Direct -1.86% Disposed -41.3% (price as of 2026-08-20)
Feb. 8, 2021 POWI S 185 $85.98 $15,906 114,474 Direct -0.16% Disposed -35.8% (price as of 2026-08-20)
Feb. 8, 2021 POWI S 2,839 $85.98 $244,097 114,659 Direct -2.42% Disposed -35.8% (price as of 2026-08-20)
Feb. 5, 2021 POWI S 1,049 $85.65 $89,847 110,329 Direct -0.94% Disposed -35.6% (price as of 2026-08-20)
Feb. 3, 2021 POWI S 1,649 $81.61 $134,575 111,378 Direct -1.46% Disposed -32.4% (price as of 2026-08-20)
Nov. 19, 2020 POWI S 3,764 $68.51 $257,872 105,322 Direct -3.45% Disposed -19.5% (price as of 2026-08-20)
Aug. 6, 2020 POWI S 1,364 $120.13 $163,857 54,543 Direct -2.44% Disposed -8.1% (price as of 2026-08-20)
May 27, 2020 POWI S 2,697 $112.59 $303,655 55,779 Direct -4.61% Disposed -2.0% (price as of 2026-08-20)
May 19, 2020 POWI S 2,125 $107.40 $228,225 58,476 Direct -3.51% Disposed 2.7% (price as of 2026-08-20)
April 2, 2020 POWI S 753 $81.41 $61,302 60,601 Direct -1.23% Disposed 35.5% (price as of 2026-08-20)
Feb. 14, 2020 POWI S 1,136 $106.07 $120,496 61,354 Direct -1.82% Disposed 4.0% (price as of 2026-08-20)
Feb. 13, 2020 POWI S 760 $108.56 $82,506 62,490 Direct -1.20% Disposed 1.6% (price as of 2026-08-20)
Feb. 10, 2020 POWI S 1,400 $106.19 $148,666 63,250 Direct -2.17% Disposed 3.9% (price as of 2026-08-20)
Feb. 7, 2020 POWI S 1,021 $103.16 $105,326 64,650 Direct -1.55% Disposed 7.0% (price as of 2026-08-20)
Feb. 4, 2020 POWI S 383 $101.10 $38,721 56,792 Direct -0.67% Disposed 9.1% (price as of 2026-08-20)
Jan. 28, 2020 POWI S 1,161 $99.59 $115,624 57,037 Direct -1.99% Disposed 10.8% (price as of 2026-08-20)
Aug. 29, 2019 POWI S 1,141 $89.20 $101,777 58,198 Direct -1.92% Disposed 23.7% (price as of 2026-08-20)
April 2, 2019 POWI S 756 $70.88 $53,585 59,151 Direct -1.26% Disposed 55.7% (price as of 2026-08-20)
Feb. 28, 2019 POWI S 1,309 $72.92 $95,452 59,907 Direct -2.14% Disposed 51.3% (price as of 2026-08-20)
Feb. 14, 2019 POWI S 734 $70.53 $51,769 61,216 Direct -1.18% Disposed 56.4% (price as of 2026-08-20)
Feb. 14, 2019 POWI S 1,825 $70.53 $128,717 61,950 Direct -2.86% Disposed 56.4% (price as of 2026-08-20)
Feb. 14, 2019 POWI S 611 $70.53 $43,094 63,775 Direct -0.95% Disposed 56.4% (price as of 2026-08-20)
Feb. 4, 2019 POWI S 732 $66.22 $48,473 49,142 Direct -1.47% Disposed 66.6% (price as of 2026-08-20)
Jan. 28, 2019 POWI S 835 $65.31 $54,534 49,698 Direct -1.65% Disposed 68.9% (price as of 2026-08-20)
Jan. 28, 2019 POWI S 657 $65.31 $42,909 50,533 Direct -1.28% Disposed 68.9% (price as of 2026-08-20)
Nov. 5, 2018 POWI S 152 $57.81 $8,787 51,025 Direct -0.30% Disposed 90.9% (price as of 2026-08-20)
April 2, 2018 POWI S 758 $67.08 $50,847 51,177 Direct -1.46% Disposed 64.5% (price as of 2026-08-20)
Feb. 27, 2018 POWI S 1,009 $68.06 $68,673 51,935 Direct -1.91% Disposed 62.1% (price as of 2026-08-20)
Feb. 15, 2018 POWI S 2,472 $63.18 $156,181 52,944 Direct -4.46% Disposed 74.6% (price as of 2026-08-20)
Feb. 5, 2018 POWI S 736 $66.29 $48,789 46,842 Direct -1.55% Disposed 66.5% (price as of 2026-08-20)
Jan. 30, 2018 POWI S 478 $76.40 $36,519 40,724 Direct -1.16% Disposed 44.4% (price as of 2026-08-20)
Jan. 29, 2018 POWI S 805 $77.60 $62,468 41,202 Direct -1.92% Disposed 42.2% (price as of 2026-08-20)
Jan. 29, 2018 POWI S 647 $77.60 $50,207 42,007 Direct -1.52% Disposed 42.2% (price as of 2026-08-20)
Nov. 30, 2017 POWI S 704 $78.33 $55,144 42,654 Direct -1.62% Disposed 40.9% (price as of 2026-08-20)
Nov. 6, 2017 POWI S 156 $81.16 $12,661 43,358 Direct -0.36% Disposed 36.0% (price as of 2026-08-20)
Aug. 30, 2017 POWI S 1,000 $71.22 $71,220 43,405 Direct -2.25% Disposed 54.9% (price as of 2026-08-20)
May 26, 2017 POWI S 776 $67.04 $52,023 44,405 Direct -1.72% Disposed 64.6% (price as of 2026-08-20)

Showing latest 100 of 155 transactions

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date Ticker Security Underlying Exercise price Expiration Shares A/D
Feb. 24, 2022 POWI Non-Qualified Stock Option (right to buy) Common Stock (1,008) $21.44 May 8, 2022 1,008 Disposed
Feb. 24, 2022 POWI Incentive Stock Option (right to buy) Common Stock (10,992) $21.44 May 8, 2022 10,992 Disposed
Nov. 10, 2014 POWI Non-Qualified Stock Option (right to buy) Common Stock (209) $21.14 April 28, 2019 209 Disposed
Aug. 27, 2014 POWI Incentive Stock Option (right to buy) Common Stock (4,000) $42.88 May 8, 2022 4,000 Disposed
Feb. 24, 2014 POWI Non-Qualified Stock Option (right to buy) Common Stock (2,000) $26.75 Feb. 7, 2016 2,000 Disposed
Feb. 20, 2014 POWI Non-Qualified Stock Option (right to buy) Common Stock (6,000) $17.18 Jan. 24, 2015 6,000 Disposed
Nov. 27, 2013 POWI Non-Qualified Stock Option (right to buy) Common Stock (2,327) $27.22 Feb. 4, 2014 2,327 Disposed
Aug. 26, 2013 POWI Non-Qualified Stock Option (right to buy) Common Stock (5,000) $27.22 Feb. 4, 2014 5,000 Disposed

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 7 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date Ticker Security Shares Ownership
Aug. 1, 2013 POWI Common Stock 17,237 Direct
Aug. 1, 2013 POWI Incentive Stock Option (right to buy)→ Common Stock (9,496) 9,496 Direct
Aug. 1, 2013 POWI Non-Qualified Stock Option (right to buy)→ Common Stock (6,000) 6,000 Direct
Aug. 1, 2013 POWI Non-Qualified Stock Option (right to buy)→ Common Stock (209) 209 Direct
Aug. 1, 2013 POWI Non-Qualified Stock Option (right to buy)→ Common Stock (2,000) 2,000 Direct
Aug. 1, 2013 POWI Non-Qualified Stock Option (right to buy)→ Common Stock (7,327) 7,327 Direct
Aug. 1, 2013 POWI Non-Qualified Stock Option (right to buy)→ Common Stock (504) 504 Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

POWI

Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2019 $318,961 $4,250 $939,301 — — $4,051 $8,620 $1,275,183
2018 $308,884 $1,500 $801,259 — — — $8,420 $1,120,063
2017 $296,538 $6,214 $1,549,003 — — $11,685 $8,367 $1,871,807

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.