KY Semiconductors & Semiconductor Equipment

Silicon Motion Technology Corp (SIMO)

Track

Over the last 90 days, Silicon Motion Technology Corp. has seen significant insider selling, with a net value of -$1.93 million and a net insider count of -3. Total sell transactions amounted to $6.39 million, with no reported buy transactions. Recent notable sales include LIN KUAN-MING and SHIEH HAN-PING selling shares in June.
Ticker: SIMO Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Silicon Motion Technology Corp. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
SHIEH HAN-PING
1 sale — total 328,000 USD
Sale 18 Jun 2026
Value US$1,972,901.64 | Price 169.05 | Shares 14,964
Sale 18 Jun 2026
Value US$2,009,715.18 | Price 433.94 | Shares 92,657
Sale 17 Jun 2026
Value US$310,010.00 | Price 310.01 | Shares 1,000
Sale 17 Jun 2026
Value US$300,000.00 | Price 300.00 | Shares 1,000
Proposed sale 5 Jun 2026
Value US$3,219,000.00 | Price 306.57 | Shares 10,500
Sale 2 Jun 2026
Value US$301,250.00 | Price 301.25 | Shares 1,000
Proposed sale 28 May 2026
Value US$552,280.00 | Price 276.14 | Shares 2,000
Proposed sale 27 May 2026
Value US$136,225.00 | Price 272.45 | Shares 500
Proposed sale 18 May 2026
Value US$225,687.00 | Price 205.17 | Shares 1,100
Sale 6 May 2026
Value US$367,500.00 | Price 245.00 | Shares 1,500
Proposed sale 4 May 2026
Value US$328,500.00 | Price 219.00 | Shares 1,500
Proposed sale 24 Feb 2026
Value US$270,800.00 | Price 135.40 | Shares 2,000
Proposed sale 9 Dec 2025
Value US$271,350.00 | Price 90.45 | Shares 3,000
Proposed sale 11 Nov 2025
Value US$95,000.00 | Price 95.00 | Shares 1,000
Proposed sale 17 Sep 2025
Value US$1,125,000.00 | Price 90.00 | Shares 12,500
Proposed sale 3 Sep 2025
Value US$509,100.00 | Price 84.85 | Shares 6,000
Proposed sale 12 Aug 2025
Value US$458,280.00 | Price 76.38 | Shares 6,000
Proposed sale 20 Jun 2025
Value US$144,000.00 | Price 72.00 | Shares 2,000
Proposed sale 13 May 2025
Value US$214,160.00 | Price 53.54 | Shares 4,000
Proposed sale 18 Dec 2024
Value US$60,320.00 | Price 60.32 | Shares 1,000
Proposed sale 4 Dec 2024
Value US$162,000.00 | Price 54.00 | Shares 3,000
Proposed sale 21 Jun 2024
Value US$410,280.50 | Price 82.06 | Shares 5,000
Proposed sale 22 May 2024
Value US$80,560.00 | Price 80.56 | Shares 1,000
Proposed sale 13 May 2024
Value US$378,408.50 | Price 75.68 | Shares 5,000
Proposed sale 10 May 2024
Value US$382,116.50 | Price 76.42 | Shares 5,000
Proposed sale 9 May 2024
Value US$235,740.00 | Price 78.58 | Shares 3,000
Proposed sale 5 Mar 2024
Value US$1,108,026.00 | Price 72.42 | Shares 15,300
Proposed sale 16 Feb 2024
Value US$854,784.00 | Price 66.78 | Shares 12,800
Proposed sale 13 Feb 2024
Value US$253,880.00 | Price 63.47 | Shares 4,000
Proposed sale 19 Dec 2023
Value US$900,300.00 | Price 60.02 | Shares 15,000
Proposed sale 18 Sep 2023
Value US$106,320.00 | Price 53.16 | Shares 2,000
Proposed sale 14 Sep 2023
Value US$222,600.00 | Price 53.00 | Shares 4,200
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-06-24 2026-06-18 S Sale
SHIEH HAN-PING
Non-Executive Director
14,964 -49.7%
169.05
US$1,972,902 		14,964 -49.7% 169.05 US$1,972,902
2026-06-24 2026-06-18 S Sale
LIN KUAN-MING
Non-Executive Director
92,657 -18.3%
433.94
US$2,009,715 		92,657 -18.3% 433.94 US$2,009,715
2026-06-24 2026-06-17 S Sale
LIN KUAN-MING
Non-Executive Director
52,138 -9.8%
280.85
US$501,140 		52,138 -9.8% 280.85 US$501,140
2026-06-24 2026-06-17 S Sale
LIN KUAN-MING
Non-Executive Director
1,000 -9.5%
300.00
US$300,000 		1,000 -9.5% 300.00 US$300,000
2026-06-04 2026-06-05 PrS Proposed sale
LIN KUAN-MING

Affiliate
10,500
306.57
US$3,219,000 		10,500 306.57 US$3,219,000
2026-06-24 2026-06-02 S Sale
SHIEH HAN-PING
Non-Executive Director
1,000 -11.6%
301.25
US$301,250 		1,000 -11.6% 301.25 US$301,250
2026-05-27 2026-05-28 PrS Proposed sale
SHIEH HAN-PING

Affiliate
2,000
276.14
US$552,280 		2,000 276.14 US$552,280
2026-05-27 2026-05-27 PrS Proposed sale
Fan Robert C

Officer

Officer
500
272.45
US$136,225 		500 272.45 US$136,225
2026-05-18 2026-05-18 PrS Proposed sale
Fan Robert C

Officer

Officer
1,100
205.17
US$225,687 		1,100 205.17 US$225,687
2026-05-07 2026-05-06 S Sale
DUANN SHII TYNG
Non-Executive Director
1,500 -9.0%
245.00
US$367,500 		1,500 -9.0% 245.00 US$367,500
2026-05-01 2026-05-04 PrS Proposed sale
DUANN SHII TYNG

Affiliate
1,500
219.00
US$328,500 		1,500 219.00 US$328,500
2026-02-24 2026-02-24 PrS Proposed sale
Fan Robert

Officer

Officer
2,000
135.40
US$270,800 		2,000 135.40 US$270,800
2025-12-09 2025-12-09 PrS Proposed sale
Fan Robert

Officer

Officer
3,000
90.45
US$271,350 		3,000 90.45 US$271,350
2025-11-10 2025-11-11 PrS Proposed sale
DUANN SHII TYNG

Affiliate
1,000
95.00
US$95,000 		1,000 95.00 US$95,000
2025-09-16 2025-09-17 PrS Proposed sale
LIN KUAN-MING

Affiliate
12,500
90.00
US$1,125,000 		12,500 90.00 US$1,125,000
2025-09-09 2025-09-03 PrS Proposed sale
SHIEH HAN-PING

Affiliate
6,000
84.85
US$509,100 		6,000 84.85 US$509,100
2025-08-12 2025-08-12 PrS Proposed sale
SHIEH HAN-PING

Affiliate
6,000
76.38
US$458,280 		6,000 76.38 US$458,280
2025-06-25 2025-06-20 PrS Proposed sale
SHIEH HAN-PING

Affiliate
2,000
72.00
US$144,000 		2,000 72.00 US$144,000
2025-05-12 2025-05-13 PrS Proposed sale
DUANN SHII TYNG

Affiliate
4,000
53.54
US$214,160 		4,000 53.54 US$214,160
2024-12-18 2024-12-18 PrS Proposed sale
Fan Robert

Officer

Officer
1,000
60.32
US$60,320 		1,000 60.32 US$60,320
2024-12-03 2024-12-04 PrS Proposed sale
DUANN SHII TYNG

Affiliate
3,000
54.00
US$162,000 		3,000 54.00 US$162,000
2024-06-21 2024-06-21 PrS Proposed sale
YU-CHEN CHIEN

Director

Non-Executive Director
5,000
82.06
US$410,280 		5,000 82.06 US$410,280
2024-06-07 2024-05-22 PrS Proposed sale
Fan Robert

Officer

Officer
1,000
80.56
US$80,560 		1,000 80.56 US$80,560
2024-05-13 2024-05-13 PrS Proposed sale
YU-CHEN CHIEN

Director

Non-Executive Director
5,000
75.68
US$378,408 		5,000 75.68 US$378,408
2024-05-10 2024-05-10 PrS Proposed sale
YU-CHEN CHIEN

Director

Non-Executive Director
5,000
76.42
US$382,116 		5,000 76.42 US$382,116
2024-05-08 2024-05-09 PrS Proposed sale
DUANN SHII TYNG

Affiliate
3,000
78.58
US$235,740 		3,000 78.58 US$235,740
2024-03-04 2024-03-05 PrS Proposed sale
LIN KUAN-MING

Affiliate
15,300
72.42
US$1,108,026 		15,300 72.42 US$1,108,026
2024-02-20 2024-02-16 PrS Proposed sale
Chung Tsung-Ming

Affiliate
12,800
66.78
US$854,784 		12,800 66.78 US$854,784
2024-02-13 2024-02-13 PrS Proposed sale
Fan Robert

Officer

Officer
4,000
63.47
US$253,880 		4,000 63.47 US$253,880
2023-12-20 2023-12-19 PrS Proposed sale
Chung Tsung-Ming

Affiliate
15,000
60.02
US$900,300 		15,000 60.02 US$900,300
2023-09-15 2023-09-18 PrS Proposed sale
DUANN SHII TYNG

Affiliate
2,000
53.16
US$106,320 		2,000 53.16 US$106,320
2023-09-13 2023-09-14 PrS Proposed sale
YEH HUNG HSIANG

Affiliate
4,200
53.00
US$222,600 		4,200 53.00 US$222,600
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