Insider Stock Purchases: July 21, 2026

We have seen 63 open market insider transactions reported today, July 21, 2026. You can track them all on the Quiver Quantitative Insider Trading dashboard. Here are some of the largest open market insider stock purchases we have seen.

FULCRUM THERAPEUTICS, INC. ($FULC)

TANG KEVIN bought 116,671 shares on 07/16 for an estimated $415,348.

Past $FULC Insider Trades

FULCRUM THERAPEUTICS, INC. insiders have traded $FULC stock on the open market 8 times in the past 6 months. Of those trades, 6 have been purchases and 2 have been sales.

Here’s a breakdown of recent trading of $FULC stock by insiders over the last 6 months:

KEVIN TANG has made 6 purchases buying 417,562 shares for an estimated $1,485,742 and 0 sales.
ROBERT J GOULD sold 15,000 shares for an estimated $160,857
ALAN EZEKOWITZ sold 18,000 shares for an estimated $65,613

To track insider transactions, check out Quiver Quantitative's insider trading dashboard. You can access data on insider stock transactions through the Quiver Quantitative API insider transaction endpoint.

PROQR THERAPEUTICS N.V. ($PRQR)

Filius Bart bought 150,000 shares on 07/17 for an estimated $257,925.

Past $PRQR Insider Trades

PROQR THERAPEUTICS N.V. insiders have traded $PRQR stock on the open market 4 times in the past 6 months. Of those trades, 4 have been purchases and 0 have been sales.

Here’s a breakdown of recent trading of $PRQR stock by insiders over the last 6 months:

BOER DANIEL ANTON DE (Chief Executive Officer) has made 2 purchases buying 300,000 shares for an estimated $499,500 and 0 sales.
BART FILIUS has made 2 purchases buying 300,000 shares for an estimated $488,925 and 0 sales.

WILSON BANK HOLDING CO ($none)

RICHERSON HERBERT ELMER bought 1,798 shares on 07/21 for an estimated $150,043.

Past $none Insider Trades

WILSON BANK HOLDING CO insiders have traded $none stock on the open market 6 times in the past 6 months. Of those trades, 6 have been purchases and 0 have been sales.

Here’s a breakdown of recent trading of $none stock by insiders over the last 6 months:

HERBERT ELMER RICHERSON has made 2 purchases buying 1,813 shares for an estimated $151,249 and 0 sales.
JOHN MCDEARMAN (President & CEO) purchased 14 shares for an estimated $1,126
CLARK OAKLEY (EVP) has made 2 purchases buying 10 shares for an estimated $819 and 0 sales.
JOHN FOSTER` (EVP) purchased 4 shares for an estimated $321

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD ($TSM)

Lin Shyue-Shyh (VP) bought 1,000 shares on 07/19 for an estimated $72,100.

Past $TSM Insider Trades

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD insiders have traded $TSM stock on the open market 115 times in the past 6 months. Of those trades, 113 have been purchases and 2 have been sales.

Here’s a breakdown of recent trading of $TSM stock by insiders over the last 6 months:

TZU-SOU CHUANG (VP) has made 3 purchases buying 149 shares for an estimated $10,300 and 1 sale selling 200,000 shares for an estimated $13,966,000.
SHYUE-SHYH LIN (VP) has made 8 purchases buying 8,148 shares for an estimated $501,004 and 0 sales.
BOR-ZEN TIEN (VP) has made 16 purchases buying 5,195 shares for an estimated $373,471 and 0 sales.
URSULA M BURNS purchased 1,000 shares for an estimated $322,050
LIPEN YUAN (VP) has made 5 purchases buying 2,134 shares for an estimated $163,716 and 0 sales.
CHOH FEI YEAP (SVP) has made 4 purchases buying 1,176 shares for an estimated $67,956 and 0 sales.
CHE-CHIA WEI (Chairman and CEO) has made 3 purchases buying 482 shares for an estimated $33,351 and 0 sales.
YUNG-PEI CHIN (EVP and Co-COO) has made 3 purchases buying 229 shares for an estimated $15,833 and 0 sales.
YUH-JIER MII (EVP and Co-COO) has made 3 purchases buying 228 shares for an estimated $15,775 and 0 sales.
CHIH-HO CHEN (Controller) has made 4 purchases buying 153 shares for an estimated $10,852 and 1 sale selling 50 shares for an estimated $3,761.
KEVIN XIAOQIANG ZHANG (SVP and Deputy Co-COO) has made 3 purchases buying 202 shares for an estimated $13,958 and 0 sales.
YUNG-CHIN HOU (SVP and Deputy Co-COO) has made 3 purchases buying 201 shares for an estimated $13,900 and 0 sales.
SHIEN-YANG WU (SVP) has made 3 purchases buying 182 shares for an estimated $12,578 and 0 sales.
SHU-HUA FANG (SVP and GC) has made 3 purchases buying 179 shares for an estimated $12,368 and 0 sales.
YING-LANG WANG (SVP) has made 3 purchases buying 178 shares for an estimated $12,310 and 0 sales.
MIN CAO (VP) has made 3 purchases buying 174 shares for an estimated $12,061 and 0 sales.
TZONZ-SHENG CHANG (SVP) has made 3 purchases buying 172 shares for an estimated $11,890 and 0 sales.
KUO-CHIN HSU (VP) has made 3 purchases buying 171 shares for an estimated $11,832 and 0 sales.
CHUE-SAN YOO (VP) has made 3 purchases buying 169 shares for an estimated $11,697 and 0 sales.
LEE-CHUNG LU (VP) has made 3 purchases buying 166 shares for an estimated $11,468 and 0 sales.
CHUN-HSIEN LEE (SVP) has made 3 purchases buying 164 shares for an estimated $11,353 and 0 sales.
JUIPING CHUANG (VP) has made 3 purchases buying 159 shares for an estimated $10,989 and 0 sales.
SYUN-MING JANG (VP) has made 3 purchases buying 158 shares for an estimated $10,913 and 0 sales.
YUNG-HAW LIAW (VP) has made 3 purchases buying 157 shares for an estimated $10,856 and 0 sales.
CHRIS HORNG-DAR LIN (VP and CIO) has made 3 purchases buying 154 shares for an estimated $10,645 and 0 sales.
JUN HE (VP) has made 3 purchases buying 149 shares for an estimated $10,300 and 0 sales.
PEI-HUNG CHEN (VP) has made 3 purchases buying 147 shares for an estimated $10,166 and 0 sales.
YUAN-KO HWANG (VP) has made 3 purchases buying 131 shares for an estimated $9,056 and 0 sales.
YAO-CHING KU (VP) has made 2 purchases buying 94 shares for an estimated $7,173 and 0 sales.
JEN-CHAU HUANG (SVP and CFO) has made 3 purchases buying 95 shares for an estimated $6,566 and 0 sales.
YI-HUANG WU (VP) has made 2 purchases buying 79 shares for an estimated $6,028 and 0 sales.
CHIN-SHENG LU (VP) has made 2 purchases buying 74 shares for an estimated $5,647 and 0 sales.

To track insider transactions, check out Quiver Quantitative's insider trading dashboard.