Insider Stock Purchases: May 20, 2026

We have seen 189 open market insider transactions reported today, May 20, 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.

CVB FINANCIAL CORP ($CVBF)

Borba George A Jr bought 25,187 shares on 05/19 for an estimated $499,999.

Past $CVBF Insider Trades

CVB FINANCIAL CORP insiders have traded $CVBF stock on the open market 2 times in the past 6 months. Of those trades, 2 have been purchases and 0 have been sales.

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

GEORGE A JR BORBA has made 2 purchases buying 50,284 shares for an estimated $999,982 and 0 sales.

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.

MERCER INTERNATIONAL INC. ($MERC)

KELLOGG PETER R bought 380,000 shares on 05/18 for an estimated $366,510.

Past $MERC Insider Trades

MERCER INTERNATIONAL INC. insiders have traded $MERC stock on the open market 7 times in the past 6 months. Of those trades, 7 have been purchases and 0 have been sales.

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

PETER R KELLOGG has made 6 purchases buying 1,000,000 shares for an estimated $934,834 and 0 sales.
ALICE LABERGE purchased 1,000 shares for an estimated $1,900

AMRIZE LTD ($AMRZ)

Jenisch Jan Philipp (Chairman & CEO) bought 7,000 shares on 05/19 for an estimated $347,830.

Past $AMRZ Insider Trades

AMRIZE LTD insiders have traded $AMRZ stock on the open market 23 times in the past 6 months. Of those trades, 23 have been purchases and 0 have been sales.

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

JAN PHILIPP JENISCH (Chairman & CEO) has made 11 purchases buying 107,418 shares for an estimated $5,829,021 and 0 sales.
IAN A JOHNSTON (Chief Financial Officer) has made 3 purchases buying 5,450 shares for an estimated $327,175 and 0 sales.
JAIME HILL (President, Building Materials) has made 3 purchases buying 5,184 shares for an estimated $295,196 and 0 sales.
ROALD BROUWER (Chief Technology Officer) has made 2 purchases buying 5,000 shares for an estimated $285,920 and 0 sales.
MARIO GROSS (Chief Supply Chain Officer) has made 2 purchases buying 3,200 shares for an estimated $176,936 and 0 sales.
NICHOLAS C GANGESTAD purchased 2,000 shares for an estimated $94,680
STEPHEN S CLARK (Chief People Officer) purchased 2 shares for an estimated $113

SIMILARWEB LTD. ($SMWB)

Offer Or (Chief Executive Officer) bought 50,000 shares on 05/19 for an estimated $179,000.

Past $SMWB Insider Trades

SIMILARWEB LTD. insiders have traded $SMWB 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 $SMWB stock by insiders over the last 6 months:

OR OFFER (Chief Executive Officer) has made 3 purchases buying 56,105 shares for an estimated $199,586 and 0 sales.
TAMAR RAPAPORT-DAGIM purchased 40,000 shares for an estimated $128,880

ONCOLOGY INSTITUTE, INC. ($TOI)

Chernett Jorey bought 30,000 shares on 05/19 for an estimated $122,700.

Past $TOI Insider Trades

ONCOLOGY INSTITUTE, INC. insiders have traded $TOI stock on the open market 13 times in the past 6 months. Of those trades, 9 have been purchases and 4 have been sales.

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

JOREY CHERNETT has made 9 purchases buying 676,414 shares for an estimated $2,120,990 and 0 sales.
MOHIT KAUSHAL has made 0 purchases and 2 sales selling 95,719 shares for an estimated $335,133.
BRAD HIVELY sold 13,333 shares for an estimated $50,290
ROBERT ROSS CARTER (Chief Financial Officer) sold 247 shares for an estimated $879

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