Insider Cluster Buys

Companies where three or more insiders bought stock on the open market within the same two weeks. One insider buying is a data point. Several buying at once, independently, is the signal that research has tied to higher abnormal returns. All open-market purchases (Form 4, code P), own money only.

TSM TAIWAN SEMICONDUCTOR MANUFACTURING CO LT
30 insiders · $292.9K
Yuan Lipen · VP$174KSEC ↗
Wei Che-Chia · Chairman and CEO$11.1KSEC ↗
Chin Yung-Pei · EVP and Co-COO$5.3KSEC ↗
Mii Yuh-Jier · EVP and Co-COO$5.3KSEC ↗
Hou Yung-Chin · SVP and Deputy Co-COO$4.6KSEC ↗
Zhang Kevin Xiaoqiang · SVP and Deputy Co-COO$4.6KSEC ↗
Wu Shien-Yang · SVP$4.2KSEC ↗
Yeap Choh Fei · SVP$4.2KSEC ↗
Fang Shu-Hua · SVP and GC$4.2KSEC ↗
Cao Min · VP$4KSEC ↗
Wang Ying-Lang · SVP$4KSEC ↗
Chang Tzonz-Sheng · SVP$4KSEC ↗
Hsu Kuo-Chin · VP$4KSEC ↗
Lee Chun-Hsien · SVP$4KSEC ↗
Lu Lee-Chung · VP$3.8KSEC ↗
Yoo Chue-San · VP$3.7KSEC ↗
Jang Syun-Ming · VP$3.7KSEC ↗
Lin Chris Horng-Dar · VP and CIO$3.6KSEC ↗
Chuang Juiping · VP$3.6KSEC ↗
Tien Bor-Zen · VP$3.6KSEC ↗
Lin Shyue-Shyh · VP$3.4KSEC ↗
Chuang Tzu-Sou · VP$3.4KSEC ↗
Ku Yao-Ching · VP$3.4KSEC ↗
He Jun · VP$3.4KSEC ↗
Chen Pei-Hung · VP$3.4KSEC ↗
Wu Yi-Huang · VP$3KSEC ↗
Hwang Yuan-Ko · VP$2.9KSEC ↗
Lu Chin-Sheng · VP$2.9KSEC ↗
Chen Chih-Ho · Controller$2.4KSEC ↗
Huang Jen-Chau · SVP and CFO$2.1KSEC ↗
NONE West Bay BDC LLC
12 insiders · $59.6M
Qatar Investment Authority · 10% owner$27MSEC ↗
Audax Private Credit Business, LP · 10% owner$14.5MSEC ↗
French Scot · director$10MSEC ↗
BANKERS LIFE & CASUALTY CO · 10% owner$5MSEC ↗
Neuberger Berman Group LLC · 10% owner, other$2MSEC ↗
Choi Yoohyun · Chief Legal Officer$500KSEC ↗
Lawson Hugh J · Co-Chief Executive Officer$400KSEC ↗
Busch Robert W · See Remarks$100KSEC ↗
ROONEY ROBERT GERALD · director$100KSEC ↗
Hall Bjorn · Secretary and CCO$1KSEC ↗
Booth Richard Whitaker · other$500SEC ↗
Starr Gayle P · director$287SEC ↗
BRVE Braveheart Bio, Inc.
10 insiders · $159M
Forbion Growth Opportunities Fund III Cooperatief U.A. · 10% owner$64.8MSEC ↗
ORBIMED ADVISORS LLC · director, 10% owner$34.9MSEC ↗
Chimovits Erez · director, 10% owner$34.9MSEC ↗
AH Bio Fund IV, L.P. · 10% owner$19.8MSEC ↗
Viehbacher Christopher · director$1.5MSEC ↗
Murdoch Travis · CEO and President$1.5MSEC ↗
Lubner David Charles · director$1000KSEC ↗
Rickey James Paul · Chief Financial Officer$500KSEC ↗
Malek David I · director$75KSEC ↗
Anderson Michele A. · Chief Development Officer$20KSEC ↗
CDNL Cardinal Infrastructure Group Inc.
7 insiders · $8.5M
Spivey Jeremy Simmons · Chief Executive Officer$3.2MSEC ↗
Wood Anthony Leon Jr. · director$2MSEC ↗
Lee Richard Melvin Jr. · director$1.3MSEC ↗
Wood Benjamin · Chief Operating Officer$1MSEC ↗
Zelman Ivy · director$500.9KSEC ↗
Wimmer Richard Bennett · director$293.5KSEC ↗
Rowe Michael Bruce Jr. · Chief Financial Officer$255.7KSEC ↗
CC Chemours Co
7 insiders · $488.6K
Cowan Alister · director$203.1KSEC ↗
CRANSTON MARY B · director$95KSEC ↗
Dignam Denise · Chief Executive Officer$50.5KSEC ↗
HOSTETTER SHANE · Chief Financial Officer$50KSEC ↗
Familiar Calderon Gerardo · See Remarks$30.1KSEC ↗
Martinko Joseph T. · See Remarks$30KSEC ↗
Foley Michael Robert · See Remarks$30KSEC ↗
ATTO Attovia Therapeutics, Inc.
6 insiders · $52.4M
WALSH COLIN · director$10.3MSEC ↗
GOLDMAN SACHS GROUP INC · other$10.3MSEC ↗
Redmile Group, LLC · 10% owner$10.2MSEC ↗
Frazier Life Sciences XI, L.P. · 10% owner$10MSEC ↗
venBio Global Strategic Fund IV, L.P. · 10% owner$6.5MSEC ↗
Sanofi · 10% owner$5.1MSEC ↗
PNAQ Pinnacle Acquisition Corp
6 insiders · $29.8M
Hudson Steven Kenneth · Chief Executive Officer$14.8MSEC ↗
RECHTSCHAFFEN ANDREW · director, 10% owner$12.2MSEC ↗
PAC Sponsor, LLC · 10% owner$2.2MSEC ↗
Stoyan Paul J. · director$350KSEC ↗
Brandler Harry · director$100KSEC ↗
Martin Karen Lynne · director$100KSEC ↗
BLSM BlossomHill Therapeutics, Inc.
6 insiders · $25.2M
GORDON CARL L · director$10MSEC ↗
ORBIMED ADVISORS LLC · director$10MSEC ↗
Chen Bihua · director, 10% owner$5MSEC ↗
Schmid John P. · director$96KSEC ↗
Liptak Vincent Paul · General Counsel$74.7KSEC ↗
Keyes Jason A · Chief Financial Officer$11.2KSEC ↗
AMRZ Amrize Ltd
6 insiders · $956.6K
Oran Baris · Chief Financial Officer$283.5KSEC ↗
Clark Stephen S · Chief People Officer$248.9KSEC ↗
Gross Mario · Chief Supply Chain Officer$166.3KSEC ↗
Poletti Samuel Jonas · Chief Strategy & M&A Officer$117.8KSEC ↗
Hill Jaime · President, Building Materials$70.7KSEC ↗
Brouwer Roald · Chief Technology Officer$69.5KSEC ↗
ACON Aclarion, Inc.
6 insiders · $125.7K
Bond Ryan · director$50.1KSEC ↗
Gould Gregory A · CFO$24.5KSEC ↗
Neal David K · director$18KSEC ↗
Williams Amanda M · director$16KSEC ↗
Ness Brent · Chief Executive Officer$12.1KSEC ↗
Wesemann William · director$5KSEC ↗
ELAN Elanco Animal Health Inc
5 insiders · $1.5M
Kurzius Lawrence Erik · director$935.9KSEC ↗
Herendeen Paul · director$236.8KSEC ↗
Harrington Michael J · director$109.1KSEC ↗
VanHimbergen Robert M · EVP and CFO$96.9KSEC ↗
O'Neill Shiv · GC AND CORP SEC$94.3KSEC ↗
HEPA Hepion Pharmaceuticals, Inc.
5 insiders · $825K
LoPriore Vincent S · Executive Chairman$500KSEC ↗
Stetz Gary S. · Interim CEO$100KSEC ↗
Purcell Michael J. · director$100KSEC ↗
Appajosyula Sireesh · Chief Operating Officer$100KSEC ↗
Stetz Gary S. II · director$25KSEC ↗
DKL Delek Logistics Partners, LP
5 insiders · $750K
Yemin Ezra Uzi · Chairman$300KSEC ↗
Hobbs Mark Wayne · EVP$200KSEC ↗
Soreq Avigal · President$125KSEC ↗
Wright Robert G. · EVP, Chief Financial Officer$75KSEC ↗
Spiegel Reuven · Executive Vice President, DKL$50KSEC ↗
KMPR KEMPER Corp
5 insiders · $367.9K
Gorevic Jason N · director$129.6KSEC ↗
LADERMAN GERALD · director$106KSEC ↗
McAnena Stephen J · President and CEO$79.5KSEC ↗
Evans Carl Thomas Jr. · EVP, Sec. & General Counsel$26.5KSEC ↗
Camden Bradley T · EVP and CFO$26.3KSEC ↗
FEMY FEMASYS INC
5 insiders · $134K
Elefant Dov · Chief Financial Officer$50KSEC ↗
Lee-Sepsick Kathy · Chief Executive Officer$50KSEC ↗
Canning John Charles · Chief Operating Officer$14KSEC ↗
Sipos Jeremy Alexander · Chief Technology Officer$10KSEC ↗
Mifek Jeffrey Gerald · Chief Clinical-Medical Affairs$10KSEC ↗
XRN Chiron Real Estate Inc.
4 insiders · $2.6M
Fitzgerald Charles · director$991.9KSEC ↗
Roseth Aaron Robert · COO$495.9KSEC ↗
Decker Mark Okey Jr · CEO and President$287KSEC ↗
Whitlock Matthew Fitzsimmons · Chief Investment Officer$36.8KSEC ↗
CODI Compass Diversified Holdings
4 insiders · $1.5M
ENTERLINE LARRY L · other$833.4KSEC ↗
Sawtelle Zachary T. · other$386.8KSEC ↗
SHAFFER TERI · other$145.6KSEC ↗
Keller Stephen · other$120.1KSEC ↗
LIEN Chicago Atlantic BDC, Inc.
4 insiders · $1M
Mazarakis John · 10% owner$566.4KSEC ↗
Gordon Scott · Co-Chief Investment Officer$420.8KSEC ↗
Mahajan Umesh · Secretary; Co-CIO$38.4KSEC ↗
Fazio Gianni James Lezziere · Chief Accounting Officer$1.9KSEC ↗
INV Innventure, Inc.
4 insiders · $807.8K
Otworth Michael · Executive Chairman$349.3KSEC ↗
Donnally James O · director$337.5KSEC ↗
Haskell Gregory W · Chief Executive Officer$75.6KSEC ↗
Brown Bruce · director$45.4KSEC ↗
EMBC Embecta Corp.
4 insiders · $557.9K
HOMBACH ROBERT J. · director$223.8KSEC ↗
Kurdikar Devdatt · President and CEO$140.9KSEC ↗
Mann Jeffrey Z · Pres, Pharm Svc&Prod Mgmt, CLO$99.8KSEC ↗
Elguicze Jacob · SVP and CFO$93.4KSEC ↗
FOCL EDAP TMS SA
4 insiders · $408.5K
WILLSEY LANCE · director$237.5KSEC ↗
Rhodes Ryan · Chief Executive Officer$99.8KSEC ↗
Schulz Fran · director$47.5KSEC ↗
Shah Sanket · General Counsel & Corp Sec$23.8KSEC ↗
VRCA Verrica Pharmaceuticals Inc.
4 insiders · $210.9K
Rieger Jayson · CEO and President$125.8KSEC ↗
Rosenberg Noah L. · CMO$30.6KSEC ↗
Zawitz David · Chief Operating Officer$29.9KSEC ↗
Kirby John J. · Interim CFO$24.6KSEC ↗
EDAP EDAP TMS SA
4 insiders · $142.5K
Horn David R. · director$47.5KSEC ↗
LEVINE JOSHUA · director$47.5KSEC ↗
Mobeck Kenneth S. · Chief Financial Officer$23.8KSEC ↗
Annen Steven · SVP, Marketing & Product Mgmt.$23.8KSEC ↗
TISI TEAM INC
4 insiders · $102.7K
McGinnis Pamela J. · director$45.8KSEC ↗
Horton Anthony R · director$45.4KSEC ↗
Lederman Evan S. · director$11.5KSEC ↗
Stewart Michael David · director, 10% owner$0SEC ↗
GABC GERMAN AMERICAN BANCORP, INC.
4 insiders · $62.5K
Seger Andrew M · director$20KSEC ↗
Ryan Christina M · director$20KSEC ↗
Bawel Zachary W · director$20KSEC ↗
KELLY JASON M · director$2.5KSEC ↗

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Cluster buying has historically preceded higher abnormal returns than a lone insider purchase (roughly 4–8% over 6–12 months in published studies). Historical, not a promise, and not investment advice. Built live from the SEC Form 4 feed. See also the full buy radar.