Form 144
Proposed Insider Sale
2026-05-27
SIMO Form 144 filed for proposed insider sale by Fan Robert C (500 shares) ~$272.4K
Fan Robert C filed a Form 144 with the SEC indicating intent to sell SIMO (Silicon Motion Technology CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.
Filing: Form 144 (Proposed Sale Notice)
Insider: Fan Robert C
Shares: 500
Est. Value: $272.4K
Form 144
Proposed Insider Sale
2026-05-27
SIMO Form 144 filed for proposed insider sale by SHIEH HAN-PING (2,000 shares) ~$1.10M
SHIEH HAN-PING filed a Form 144 with the SEC indicating intent to sell SIMO (Silicon Motion Technology CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.
Filing: Form 144 (Proposed Sale Notice)
Insider: SHIEH HAN-PING
Shares: 2,000
Est. Value: $1.10M
Form 144
Proposed Insider Sale
2026-05-18
SIMO Form 144 filed for proposed insider sale by Fan Robert C (1,100 shares) ~$451.4K
Fan Robert C filed a Form 144 with the SEC indicating intent to sell SIMO (Silicon Motion Technology CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.
Filing: Form 144 (Proposed Sale Notice)
Insider: Fan Robert C
Shares: 1,100
Est. Value: $451.4K
Form 4
Insider Selling
2026-05-07
SIMO insider DUANN SHII TYNG (Director) sold 1,500 shares (~$367.5K)
DUANN SHII TYNG, listed as Director at Silicon Motion Technology CORP, reported an open-market sale of 1,500 SIMO shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
Filing: Form 4 (Insider Transaction)
Insider: DUANN SHII TYNG (Director)
Shares: 1,500
Est. Value: $367.5K
Form 144
Proposed Insider Sale
2026-05-01
SIMO Form 144 filed for proposed insider sale by DUANN SHII TYNG (1,500 shares) ~$657.0K
DUANN SHII TYNG filed a Form 144 with the SEC indicating intent to sell SIMO (Silicon Motion Technology CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.
Filing: Form 144 (Proposed Sale Notice)
Insider: DUANN SHII TYNG
Shares: 1,500
Est. Value: $657.0K
Form 144
Proposed Insider Sale
2026-02-24
SIMO Form 144 filed for proposed insider sale by Fan Robert (2,000 shares) ~$541.6K
Fan Robert filed a Form 144 with the SEC indicating intent to sell SIMO (Silicon Motion Technology CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.
Filing: Form 144 (Proposed Sale Notice)
Insider: Fan Robert
Shares: 2,000
Est. Value: $541.6K
Form 144
Proposed Insider Sale
2025-12-09
SIMO Form 144 filed for proposed insider sale by Fan Robert (3,000 shares) ~$542.7K
Fan Robert filed a Form 144 with the SEC indicating intent to sell SIMO (Silicon Motion Technology CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.
Filing: Form 144 (Proposed Sale Notice)
Insider: Fan Robert
Shares: 3,000
Est. Value: $542.7K
Form 144
Proposed Insider Sale
2025-11-10
SIMO Form 144 filed for proposed insider sale by DUANN SHII TYNG (1,000 shares) ~$190.0K
DUANN SHII TYNG filed a Form 144 with the SEC indicating intent to sell SIMO (Silicon Motion Technology CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.
Filing: Form 144 (Proposed Sale Notice)
Insider: DUANN SHII TYNG
Shares: 1,000
Est. Value: $190.0K
Form 144
Proposed Insider Sale
2025-09-16
SIMO Form 144 filed for proposed insider sale by LIN KUAN-MING (12,500 shares) ~$2.25M
LIN KUAN-MING filed a Form 144 with the SEC indicating intent to sell SIMO (Silicon Motion Technology CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.
Filing: Form 144 (Proposed Sale Notice)
Insider: LIN KUAN-MING
Shares: 12,500
Est. Value: $2.25M
Form 144
Proposed Insider Sale
2025-09-09
SIMO Form 144 filed for proposed insider sale by SHIEH HAN-PING (6,000 shares) ~$1.02M
SHIEH HAN-PING filed a Form 144 with the SEC indicating intent to sell SIMO (Silicon Motion Technology CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.
Filing: Form 144 (Proposed Sale Notice)
Insider: SHIEH HAN-PING
Shares: 6,000
Est. Value: $1.02M
Form 144
Proposed Insider Sale
2025-08-12
SIMO Form 144 filed for proposed insider sale by SHIEH HAN-PING (6,000 shares) ~$916.6K
SHIEH HAN-PING filed a Form 144 with the SEC indicating intent to sell SIMO (Silicon Motion Technology CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.
Filing: Form 144 (Proposed Sale Notice)
Insider: SHIEH HAN-PING
Shares: 6,000
Est. Value: $916.6K
Form 144
Proposed Insider Sale
2025-06-25
SIMO Form 144 filed for proposed insider sale by SHIEH HAN-PING (2,000 shares) ~$288.0K
SHIEH HAN-PING filed a Form 144 with the SEC indicating intent to sell SIMO (Silicon Motion Technology CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.
Filing: Form 144 (Proposed Sale Notice)
Insider: SHIEH HAN-PING
Shares: 2,000
Est. Value: $288.0K
Form 144
Proposed Insider Sale
2025-05-12
SIMO Form 144 filed for proposed insider sale by DUANN SHII TYNG (4,000 shares) ~$428.3K
DUANN SHII TYNG filed a Form 144 with the SEC indicating intent to sell SIMO (Silicon Motion Technology CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.
Filing: Form 144 (Proposed Sale Notice)
Insider: DUANN SHII TYNG
Shares: 4,000
Est. Value: $428.3K
Form 144
Proposed Insider Sale
2024-12-18
SIMO Form 144 filed for proposed insider sale by Fan Robert (1,000 shares) ~$120.6K
Fan Robert filed a Form 144 with the SEC indicating intent to sell SIMO (Silicon Motion Technology CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.
Filing: Form 144 (Proposed Sale Notice)
Insider: Fan Robert
Shares: 1,000
Est. Value: $120.6K
Form 144
Proposed Insider Sale
2024-12-03
SIMO Form 144 filed for proposed insider sale by DUANN SHII TYNG (3,000 shares) ~$324.0K
DUANN SHII TYNG filed a Form 144 with the SEC indicating intent to sell SIMO (Silicon Motion Technology CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.
Filing: Form 144 (Proposed Sale Notice)
Insider: DUANN SHII TYNG
Shares: 3,000
Est. Value: $324.0K