SEC Insider Transactions from Schlaefer John.

Last updated: 2026-03-15 09:24 UTC | Total transactions: 16

Schlaefer John has filed 16 insider transactions across 1 company since March 2024.

Most recent transaction: a transaction of 555 shares of GCT Semiconductor Holding, Inc. ($GCTS) on September 26, 2025.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
Sept. 26, 2025 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir J Common Stock, par value $0.0001 per share 555 $0.00 202,728.0000 48,246,480 0.27% 0.00%
Sept. 19, 2025 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir A Common Stock, par value $0.0001 per share 75000 $0.00 202,173.0000 48,246,480 58.97% 0.16%
March 26, 2024 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir A Stock Option (Right to Buy) 50425 $0.00 50,425.0000 0 9999.99% 0.00%
March 26, 2024 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir A Common Stock, par value $0.0001 per share 78700 $0.00 78,700.0000 0 9999.99% 0.00%
March 26, 2024 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir A Common Stock, par value $0.0001 per share 12804 $0.00 12,804.0000 0 9999.99% 0.00%
March 26, 2024 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir A Stock Option (Right to Buy) 35669 $0.00 35,669.0000 0 9999.99% 0.00%
March 26, 2024 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir A Stock Option (Right to Buy) 28191 $0.00 28,191.0000 0 9999.99% 0.00%
March 26, 2024 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir A Stock Option (Right to Buy) 21533 $0.00 21,533.0000 0 9999.99% 0.00%
Jan. 13, 2025 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir M Common Stock, par value $0.0001 per share 35669 $0.11 127,173.0000 0 38.98% 0.00%
Jan. 13, 2025 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir M Stock Option (Right to Buy) 35669 $0.00 0.0000 0 100.00% 0.00%
March 26, 2024 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir A Stock Option (Right to Buy) 35669 $0.00 35,669.0000 0 9999.99% 0.00%
March 26, 2024 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir A Stock Option (Right to Buy) 28191 $0.00 28,191.0000 0 9999.99% 0.00%
March 26, 2024 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir A Stock Option (Right to Buy) 21533 $0.00 21,533.0000 0 9999.99% 0.00%
March 26, 2024 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir A Common Stock, par value $0.0001 per share 78700 $0.00 78,700.0000 0 9999.99% 0.00%
March 26, 2024 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir A Stock Option (Right to Buy) 50425 $0.00 50,425.0000 0 9999.99% 0.00%
March 26, 2024 GCT Semiconductor Holding, Inc. $GCTS Schlaefer John President, CEO & Class III Dir A Common Stock, par value $0.0001 per share 12804 $0.00 12,804.0000 0 9999.99% 0.00%