BOLD Insider Trading

Net Buying · 180d
Open-Market Buys (180d)
$1.1M
1 insiders
Open-Market Sells (180d)
$80K
2 insiders
Net Insider Flow
$1.0M
open market, 180d
Reporting Insiders
3
15 P/S transactions
Build

Build on these Form 4 transactions

The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.

Recent Form 4 Transactions

100 shown
DateInsiderRoleActionSharesPriceValue
Jul 8, 2026Tang Kevin10% OwnerBuy(P)14K$2.46$35K
Jul 7, 2026Tang Kevin10% OwnerBuy(P)16K$2.48$39K
Jul 6, 2026Tang Kevin10% OwnerBuy(P)27K$2.49$67K
Jul 2, 2026Tang Kevin10% OwnerBuy(P)10K$2.49$24K
Jul 1, 2026Tang Kevin10% OwnerBuy(P)72K$2.49$178K
Jul 1, 2026Crandell Keith10% OwnerOption exercise(M)16K$1.03$16K
Jul 1, 2026Crandell Keith10% OwnerSell(S)16K$2.49$40K
Jul 1, 2026Crandell Keith10% OwnerOption exercise(M)16K$0
Jul 1, 2026ARCH Venture Fund IX, L.P.10% OwnerOption exercise(M)16K$1.03$16K
Jul 1, 2026ARCH Venture Fund IX, L.P.10% OwnerSell(S)16K$2.49$40K
Jul 1, 2026ARCH Venture Fund IX, L.P.10% OwnerOption exercise(M)16K$0
Jun 30, 2026Tang Kevin10% OwnerBuy(P)26K$2.54$66K
Jun 30, 2026Tang Kevin10% OwnerBuy(P)100$2.50$250
Jun 29, 2026Tang Kevin10% OwnerBuy(P)64K$2.47$158K
Jun 29, 2026Tang Kevin10% OwnerBuy(P)777$2.48$2K
Jun 26, 2026Tang Kevin10% OwnerBuy(P)75K$2.55$191K
Jun 26, 2026Tang Kevin10% OwnerBuy(P)134$2.54$340
Jun 25, 2026Tang Kevin10% OwnerBuy(P)146K$2.48$362K
Jun 25, 2026Tang Kevin10% OwnerBuy(P)510$2.56$1K
Jun 15, 2026Lew JenniferDirectorGrant(A)32K$0
Jun 15, 2026Lim Jonathan EDirectorGrant(A)48K$0
Jun 15, 2026Christensen JamesDirectorGrant(A)32K$0
Jun 15, 2026Whiting NancyDirectorGrant(A)32K$0
Jan 23, 2026Hinkle David ASee RemarksGrant(A)140K$0
Jan 23, 2026Hornby ZacharyPresident & CEO, DirectorGrant(A)600K$0
Jan 23, 2026Doebele RobertChief Medical OfficerGrant(A)230K$0
Jan 23, 2026Hassig ChristianChief Scientific OfficerGrant(A)230K$0
Jan 23, 2026Oien JessicaSee RemarksGrant(A)220K$0
Jun 23, 2025Whiting NancyDirectorGrant(A)16K$0
Jun 23, 2025Burow KristinaDirector, 10% OwnerGrant(A)16K$0
Jun 23, 2025Lim Jonathan EDirectorGrant(A)24K$0
Jun 23, 2025Lew JenniferDirectorGrant(A)16K$0
Jun 23, 2025Christensen JamesDirectorGrant(A)16K$0
Jun 23, 2025Brennan ChristineDirectorGrant(A)16K$0
Feb 3, 2025Doebele RobertChief Medical OfficerGrant(A)180K$0
Jan 22, 2025Oien JessicaSee RemarksGrant(A)90K$0
Jan 22, 2025Hornby ZacharyPresident & CEO, DirectorGrant(A)295K$0
Jan 22, 2025Hassig ChristianChief Scientific OfficerGrant(A)95K$0
Jan 22, 2025Hinkle David ASee RemarksGrant(A)65K$0
Aug 19, 2024Rubin JamiChief Financial OfficerDisposed to issuer(D)197K
Aug 19, 2024Rubin JamiChief Financial OfficerDisposed to issuer(D)51K
Aug 19, 2024Rubin JamiChief Financial OfficerGrant(A)32K
Aug 19, 2024Rubin JamiChief Financial OfficerGrant(A)197K
Aug 19, 2024Rubin JamiChief Financial OfficerGrant(A)51K
Aug 19, 2024Rubin JamiChief Financial OfficerDisposed to issuer(D)32K
Aug 19, 2024Wagner Klaus W.Chief Medical OfficerDisposed to issuer(D)103K
Aug 19, 2024Wagner Klaus W.Chief Medical OfficerDisposed to issuer(D)10K
Aug 19, 2024Wagner Klaus W.Chief Medical OfficerDisposed to issuer(D)95K
Aug 19, 2024Wagner Klaus W.Chief Medical OfficerDisposed to issuer(D)68K
Aug 19, 2024Wagner Klaus W.Chief Medical OfficerGrant(A)42K
Aug 19, 2024Wagner Klaus W.Chief Medical OfficerGrant(A)103K
Aug 19, 2024Wagner Klaus W.Chief Medical OfficerGrant(A)10K
Aug 19, 2024Wagner Klaus W.Chief Medical OfficerGrant(A)95K
Aug 19, 2024Wagner Klaus W.Chief Medical OfficerGrant(A)68K
Aug 19, 2024Wagner Klaus W.Chief Medical OfficerDisposed to issuer(D)42K
Aug 19, 2024Abdollahian NeilChief Business OfficerDisposed to issuer(D)20K
Aug 19, 2024Abdollahian NeilChief Business OfficerDisposed to issuer(D)55K
Aug 19, 2024Abdollahian NeilChief Business OfficerDisposed to issuer(D)37K
Aug 19, 2024Abdollahian NeilChief Business OfficerDisposed to issuer(D)23K
Aug 19, 2024Abdollahian NeilChief Business OfficerDisposed to issuer(D)82K
Aug 19, 2024Abdollahian NeilChief Business OfficerGrant(A)20K
Aug 19, 2024Abdollahian NeilChief Business OfficerGrant(A)55K
Aug 19, 2024Abdollahian NeilChief Business OfficerGrant(A)37K
Aug 19, 2024Abdollahian NeilChief Business OfficerGrant(A)23K
Aug 19, 2024Abdollahian NeilChief Business OfficerGrant(A)82K
Aug 19, 2024Hornby ZacharyPresident & CEO, DirectorGrant(A)162K
Aug 19, 2024Hornby ZacharyPresident & CEO, DirectorGrant(A)257K
Aug 19, 2024Hornby ZacharyPresident & CEO, DirectorGrant(A)471K
Aug 19, 2024Hornby ZacharyPresident & CEO, DirectorGrant(A)256K
Aug 19, 2024Hornby ZacharyPresident & CEO, DirectorDisposed to issuer(D)162K
Aug 19, 2024Hornby ZacharyPresident & CEO, DirectorDisposed to issuer(D)257K
Aug 19, 2024Hornby ZacharyPresident & CEO, DirectorDisposed to issuer(D)471K
Aug 19, 2024Hornby ZacharyPresident & CEO, DirectorDisposed to issuer(D)256K
Aug 19, 2024Oien JessicaSee RemarksGrant(A)26K
Aug 19, 2024Oien JessicaSee RemarksGrant(A)42K
Aug 19, 2024Oien JessicaSee RemarksGrant(A)10K
Aug 19, 2024Oien JessicaSee RemarksDisposed to issuer(D)10K
Aug 19, 2024Oien JessicaSee RemarksGrant(A)32K
Aug 19, 2024Oien JessicaSee RemarksGrant(A)29K
Aug 19, 2024Oien JessicaSee RemarksDisposed to issuer(D)42K
Aug 19, 2024Oien JessicaSee RemarksDisposed to issuer(D)36K
Aug 19, 2024Oien JessicaSee RemarksDisposed to issuer(D)26K
Aug 19, 2024Oien JessicaSee RemarksDisposed to issuer(D)29K
Aug 19, 2024Oien JessicaSee RemarksDisposed to issuer(D)32K
Aug 19, 2024Oien JessicaSee RemarksGrant(A)16K
Aug 19, 2024Oien JessicaSee RemarksGrant(A)36K
Aug 19, 2024Oien JessicaSee RemarksDisposed to issuer(D)16K
Aug 19, 2024Hassig ChristianChief Scientific OfficerGrant(A)10K
Aug 19, 2024Hassig ChristianChief Scientific OfficerGrant(A)63K
Aug 19, 2024Hassig ChristianChief Scientific OfficerDisposed to issuer(D)10K
Aug 19, 2024Hassig ChristianChief Scientific OfficerDisposed to issuer(D)63K
Aug 19, 2024Hassig ChristianChief Scientific OfficerDisposed to issuer(D)95K
Aug 19, 2024Hassig ChristianChief Scientific OfficerDisposed to issuer(D)76K
Aug 19, 2024Hassig ChristianChief Scientific OfficerDisposed to issuer(D)49K
Aug 19, 2024Hassig ChristianChief Scientific OfficerGrant(A)49K
Aug 19, 2024Hassig ChristianChief Scientific OfficerGrant(A)76K
Aug 19, 2024Hassig ChristianChief Scientific OfficerGrant(A)95K
Jun 20, 2024Lim Jonathan EDirectorGrant(A)7K$0
Apr 2, 2024ARCH Venture Partners IX, LLC10% OwnerBuy(P)67K$16.00$1.1M
Apr 2, 2024ARCH Venture Partners IX, LLC10% OwnerConversion(C)1.0M

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Coverage: Form 4 filings indexed 2021-03-292026-07-11. Earlier history is backfilling; this window widens as it deepens.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).