Insider at

04

Insider transactions

05
0 buys (P) 13 sells (S) Net: $-15,830,828 + 73 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

73 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
March 10, 2026 AEIS S 10b5-1 543 $305.48 $165,876 129,833 Direct -0.42% Disposed -0.9% (price as of 2026-10-06)
March 10, 2026 AEIS S 10b5-1 876 $306.87 $268,818 128,957 Direct -0.67% Disposed -1.3% (price as of 2026-10-06)
March 10, 2026 AEIS S 10b5-1 1,112 $306.96 $341,340 127,845 Direct -0.86% Disposed -1.4% (price as of 2026-10-06)
March 10, 2026 AEIS S 10b5-1 1,224 $309.77 $379,158 126,621 Direct -0.96% Disposed -2.3% (price as of 2026-10-06)
March 10, 2026 AEIS S 10b5-1 3,330 $311.88 $1,038,560 123,291 Direct -2.63% Disposed -2.9% (price as of 2026-10-06)
March 10, 2026 AEIS S 10b5-1 3,718 $313.80 $1,166,708 119,573 Direct -3.02% Disposed -3.5% (price as of 2026-10-06)
March 10, 2026 AEIS S 10b5-1 5,678 $314.82 $1,787,548 113,895 Direct -4.75% Disposed -3.8% (price as of 2026-10-06)
March 10, 2026 AEIS S 10b5-1 2,312 $315.88 $730,315 111,583 Direct -2.03% Disposed -4.2% (price as of 2026-10-06)
March 10, 2026 AEIS S 10b5-1 2,309 $317.21 $732,438 109,274 Direct -2.07% Disposed -4.6% (price as of 2026-10-06)
March 10, 2026 AEIS S 10b5-1 7,229 $317.94 $2,298,388 102,045 Direct -6.62% Disposed -4.8% (price as of 2026-10-06)
March 10, 2026 AEIS S 10b5-1 13,278 $319.05 $4,236,346 88,767 Direct -13.01% Disposed -5.1% (price as of 2026-10-06)
March 10, 2026 AEIS S 10b5-1 7,535 $319.90 $2,410,446 81,232 Direct -8.49% Disposed -5.4% (price as of 2026-10-06)
March 10, 2026 AEIS S 10b5-1 856 $321.13 $274,887 80,376 Direct -1.05% Disposed -5.7% (price as of 2026-10-06)
Aug. 13, 2021 AEIS P 5,850 $85.85 $502,222 33,752 Direct +20.97% Acquired 252.7% (price as of 2026-10-06)
May 11, 2021 AEIS P 5,850 $85.00 $497,250 27,902 Direct +26.53% Acquired 256.2% (price as of 2026-10-06)
Dec. 11, 2018 AMKR P 50,000 $6.32 $316,000 150,000 Indirect +50.00% Acquired 744.8% (price as of 2026-10-06)
Dec. 10, 2018 AMKR P 100,000 $6.33 $633,000 100,000 Indirect · Acquired 743.4% (price as of 2026-10-06)
June 9, 2017 AMKR S 32,924 $12.06 $397,063 201,950 Direct -14.02% Disposed 342.7% (price as of 2026-10-06)
June 8, 2017 AMKR S 75,586 $12.13 $916,858 234,874 Direct -24.35% Disposed 340.1% (price as of 2026-10-06)
Nov. 22, 2016 AMKR S 85,214 $12.22 $1,041,315 93,750 Direct -47.62% Disposed 336.9% (price as of 2026-10-06)
Nov. 17, 2016 AMKR S 9,843 $11.82 $116,344 178,964 Direct -5.21% Disposed 351.7% (price as of 2026-10-06)
Nov. 15, 2016 AMKR S 100,000 $11.30 $1,130,000 178,964 Direct -35.85% Disposed 372.5% (price as of 2026-10-06)
Nov. 14, 2016 AMKR S 43,000 $11.53 $495,790 284,280 Direct -13.14% Disposed 363.1% (price as of 2026-10-06)
Nov. 11, 2016 AMKR S 103,828 $11.41 $1,184,677 327,280 Direct -24.08% Disposed 367.9% (price as of 2026-10-06)
Nov. 9, 2016 AMKR S 100,000 $11.02 $1,102,000 327,280 Direct -23.40% Disposed 384.5% (price as of 2026-10-06)
Nov. 7, 2016 AMKR S 100,000 $10.89 $1,089,000 348,843 Direct -22.28% Disposed 390.3% (price as of 2026-10-06)
Nov. 4, 2016 AMKR S 100,000 $10.45 $1,045,000 348,843 Direct -22.28% Disposed 410.9% (price as of 2026-10-06)

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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
March 1, 2026 AEIS Restricted Stock Units Common Stock (10,449) · · 10,449 Disposed
March 1, 2026 AEIS Restricted Stock Units Common Stock (9,130) · · 9,130 Disposed
March 1, 2026 AEIS Restricted Stock Units Common Stock (11,620) $0.00 · 11,620 Acquired
March 1, 2026 AEIS Performance Units Common Stock (18,260) $0.00 · 18,260 Acquired
Feb. 18, 2026 AEIS Performance Units Common Stock (0) $0.00 · 32,849 Disposed
March 1, 2025 AEIS Performance Units Common Stock (42,135) $0.00 · 42,135 Acquired
March 1, 2025 AEIS Restricted Stock Units Common Stock (27,388) $0.00 · 27,388 Acquired
March 1, 2025 AEIS Restricted Stock Units Common Stock (10,450) · · 10,450 Disposed
Feb. 20, 2025 AEIS Performance Units Common Stock (0) $0.00 · 53,128 Disposed
March 1, 2024 AEIS Performance Units Common Stock (31,348) $0.00 · 31,348 Acquired
March 1, 2024 AEIS Restricted Stock Units Common Stock (31,348) $0.00 · 31,348 Acquired
Feb. 21, 2024 AEIS Performance Units Common Stock (44,103) $0.00 · 44,103 Disposed
March 1, 2023 AEIS Performance Units Common Stock (32,849) $0.00 · 32,849 Acquired
March 16, 2022 AEIS Performance Units Common Stock (53,128) $0.00 · 53,128 Acquired
March 16, 2022 AEIS Employee Stock Option (right to buy) Common Stock (11,154) $85.97 March 16, 2033 11,154 Acquired
March 1, 2021 AEIS Performance Units Common Stock (44,103) $0.00 · 44,103 Acquired
Nov. 3, 2017 AMKR Director Stock Option (Right to Buy) Amkor Technology, Inc. Common Stock (18,164) $4.50 May 8, 2023 18,164 Disposed
June 8, 2017 AMKR Director Stock Option (Right to Buy) Amkor Technology, Inc. Common Stock (75,586) $4.50 May 8, 2023 75,586 Disposed
Feb. 27, 2017 AMKR Employee Stock Option (Right-to-Buy) Amkor Technology, Inc. (450,000) $9.86 Feb. 27, 2027 450,000 Acquired
Nov. 17, 2016 AMKR Employee Stock Option (Right to buy) Amkor Technology, Inc. Common Stock (9,843) $4.50 May 8, 2023 9,843 Disposed
Nov. 11, 2016 AMKR Employee Stock Option (Right to Buy) Amkor Technology, Inc.,Common Stock (103,828) $4.50 May 8, 2023 103,828 Disposed
Nov. 9, 2016 AMKR Employee Stock Option (Right to Buy) Amkor Technology, Inc., Common Stock (100,000) $4.50 May 8, 2023 100,000 Disposed
Nov. 7, 2016 AMKR Employee Stock Option (Right to Buy) Amkor Technology, Inc.,Common Stock (100,000) $4.50 May 8, 2023 100,000 Disposed
Nov. 4, 2016 AMKR Employee Stock Option (Right to Buy) Amkor Technology, Inc., Common Stock (100,000) $4.50 May 8, 2023 100,000 Disposed
Sept. 14, 2016 AMKR Employee Stock Option (Right to Buy) Amkor Technology, Inc., Common Stock (42,579) $4.50 May 8, 2023 42,579 Disposed
Aug. 9, 2016 AMKR Employee Stock Option (Right to Buy) Amkor Technology, Inc.,Common Stock (68,461) $4.50 May 8, 2023 68,461 Disposed
Aug. 8, 2016 AMKR Employee Stock Option (Right to Buy) Amkor Technology, Inc., Common Stock (31,539) $4.50 May 8, 2023 31,539 Disposed
Aug. 4, 2016 AMKR Employee Stock Option (Right to Buy) Amkor Technology, Inc., Common Stock (100,000) $4.50 May 8, 2023 100,000 Disposed
May 8, 2013 AMKR Common Stock Amkor Technology, Inc. (750,000) $4.50 May 8, 2023 750,000 Acquired
Sept. 1, 2011 WOLF NONQUALIFIED STOCK OPTION (RIGHT TO BUY) COMMON STOCK (35,000) $30.92 Sept. 1, 2018 35,000 Acquired
Nov. 8, 2010 WOLF NONQUALIFIED STOCK OPTION (RIGHT TO BUY) COMMON STOCK (11,667) $35.89 Sept. 1, 2016 11,667 Disposed
Oct. 22, 2010 WOLF NONQUALIFIED STOCK OPTION (RIGHT TO BUY) COMMON STOCK (26,667) $22.90 Sept. 2, 2015 26,667 Disposed
Sept. 1, 2010 WOLF NONQUALIFIED STOCK OPTION (RIGHT TO BUY) COMMON STOCK (35,000) $55.30 Sept. 1, 2017 35,000 Acquired
Jan. 21, 2010 WOLF NONQUALIFIED STOCK OPTION (RIGHT TO BUY) COMMON STOCK (26,667) $22.90 Sept. 2, 2015 26,667 Disposed
Sept. 1, 2009 WOLF NONQUALIFIED STOCK OPTION (RIGHT TO BUY) COMMON STOCK (35,000) $35.89 Sept. 1, 2016 35,000 Acquired
Sept. 2, 2008 WOLF NONQUALIFIED STOCK OPTION (RIGHT TO BUY) COMMON STOCK (80,000) $22.90 Sept. 2, 2015 80,000 Acquired

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

Initial ownership (Form 3) 2 holdings

07

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

DateTickerSecuritySharesOwnership
March 2, 2021 AEIS Common Stock 0 Direct
May 14, 2013 AMKR Amkor Technology, Inc. Common Stock · Indirect

Compensation (DEF 14A)

08

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

Fiscal yearSalaryBonusStock awards Option awardsNon-equity incentivePension changeOtherTotal
2011 $366,538 · · · $41,486 · $7,585 $1,567,603
2010 $350,000 · · · $285,548 · $7,520 $1,347,365
Fiscal yearSalaryBonusStock awards Option awardsNon-equity incentivePension changeOtherTotal
2020 $504,077 $1,062,500 · · $951,750 · $570,882 $3,089,209
2019 $893,519 $2,125,000 · · $1,268,663 · $14,138 $4,301,320
2018 $858,656 $2,125,000 · · $920,675 · $15,091 $3,919,422

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