CERO Insider Trading

CERO · full profile →Last filing Mar 4, 2026
Mixed · 180d
Open-Market Buys (180d)
$0
0 insiders
Open-Market Sells (180d)
$0
0 insiders
Net Insider Flow
$0
open market, 180d
Reporting Insiders
0
0 P/S transactions
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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
Mar 4, 2026Francois EricDirectorGrant(A)1.8M$0
Jan 7, 2026Pierce KristenChief Development OfficerGrant(A)1.6M$0
Jan 7, 2026Patel ShamiDirectorGrant(A)691K$0
Jan 7, 2026Laporte KathleenDirectorGrant(A)691K$0
Jan 7, 2026Kucharchuk Andrew AlbertChief Financial OfficerGrant(A)1.2M$0
Jan 7, 2026Rolfe LindseyDirectorGrant(A)691K$0
Jan 7, 2026Byrnes MichaelDirectorGrant(A)691K$0
Jan 7, 2026Atwood Brian GDirectorGrant(A)1.6M$0
Jan 7, 2026Ehrlich Christopher BChairman and CEO, DirectorGrant(A)4.5M$0
May 30, 2025Kucharchuk Andrew AlbertChief Financial OfficerGrant(A)153K$0
May 30, 2025Pierce KristenChief Development OfficerGrant(A)155K$0
May 30, 2025Atwood Brian GDirectorGrant(A)123K$0
May 30, 2025Ehrlich Christopher BChairman and CEO, DirectorGrant(A)62K$0
May 30, 2025Patel ShamiDirectorGrant(A)12K$0
May 30, 2025Rolfe LindseyDirectorGrant(A)9K$0
May 30, 2025Byrnes MichaelDirectorGrant(A)9K$0
May 30, 2025Laporte KathleenDirectorGrant(A)9K$0
Mar 31, 2025Atwood Brian GDirectorOption exercise(M)294K$0
Mar 31, 2025Atwood Brian GDirectorOption exercise(M)294K$0
Mar 4, 2025Ehrlich Christopher BChairman and CEO, DirectorGrant(A)119K$0
Mar 4, 2025Atwood Brian GDirectorGrant(A)15K$0
Mar 4, 2025Patel ShamiDirectorGrant(A)15K$0
Mar 4, 2025Byrnes MichaelDirectorGrant(A)18K$0
Mar 4, 2025Rolfe LindseyDirectorGrant(A)18K$0
Mar 4, 2025Laporte KathleenDirectorGrant(A)18K$0
Feb 24, 2025Atwood Brian GDirectorGrant(A)254K$0
Feb 24, 2025Byrnes MichaelDirectorGrant(A)128K$0
Feb 24, 2025Ehrlich Christopher BChairman and CEO, DirectorGrant(A)1.3M$0
Feb 24, 2025Laporte KathleenDirectorGrant(A)128K$0
Feb 24, 2025Patel ShamiDirectorGrant(A)128K$0
Feb 24, 2025Rolfe LindseyDirectorGrant(A)128K$0
Feb 7, 2025Atwood Brian GDirectorGrant(A)306K$0
Feb 7, 2025Atwood Brian GDirectorGrant(A)204K$1.96$400K
Feb 7, 2025Atwood Brian GDirectorGrant(A)306K$1.96$600K
Feb 7, 2025Atwood Brian GDirectorGrant(A)204K$0
Dec 13, 2024YK Bioventures Opportunities GP I, LLC10% OwnerSell(S)3.0M$0.06$180K
Dec 12, 2024YK Bioventures Opportunities GP I, LLC10% OwnerSell(S)1.6M$0.07$113K
Dec 11, 2024YK Bioventures Opportunities GP I, LLC10% OwnerSell(S)1.3M$0.08$108K
Dec 10, 2024Kossar Mitchell William10% OwnerSell(S)1.6M$0.09$141K
Dec 9, 2024Kossar Mitchell William10% OwnerSell(S)851K$0.11$94K
Dec 6, 2024Kossar Mitchell William10% OwnerSell(S)1.2M$0.12$148K
Dec 2, 2024Patel ShamiDirectorGrant(A)128K$0
Dec 2, 2024Atwood Brian GDirectorGrant(A)254K$0
Dec 2, 2024Byrnes MichaelDirectorGrant(A)128K$0
Dec 2, 2024Laporte KathleenDirectorGrant(A)128K$0
Dec 2, 2024Rolfe LindseyDirectorGrant(A)128K$0
Dec 2, 2024Ehrlich Christopher BChairman and CEO, DirectorGrant(A)1.3M$0
Oct 10, 2024Kossar Mitchell William10% OwnerSell(S)3.3M$0.10$325K
Oct 1, 2024Pierce KristenChief Development OfficerGrant(A)200K$0
Oct 1, 2024Kucharchuk Andrew AlbertChief Financial OfficerGrant(A)500K$0
Sep 30, 2024Atwood Brian GDirectorDisposed to issuer(D)14K$0
Sep 30, 2024Atwood Brian GDirectorDisposed to issuer(D)1.3M$0
Sep 30, 2024Ehrlich Christopher BInterim Chairman and CEO, DirectorDisposed to issuer(D)572K$0
Sep 25, 2024Atwood Brian GDirectorOption exercise(M)19.4M
Sep 25, 2024Atwood Brian GDirectorOption exercise(M)1K$1,000.00$1.0M
Sep 25, 2024Ehrlich Christopher BInterim Chairman and CEO, DirectorOption exercise(M)5.3M
Sep 25, 2024Ehrlich Christopher BInterim Chairman and CEO, DirectorOption exercise(M)275$1,000.00$275K
Sep 25, 2024Laporte KathleenDirectorOption exercise(M)966K
Sep 25, 2024Laporte KathleenDirectorOption exercise(M)50$1,000.00$50K
Sep 25, 2024Sloan Stuart M10% OwnerSell(S)532K$0.10$53K
Jun 28, 2024Carter Charles RossChief Financial OfficerGrant(A)100K$0
Mar 25, 2024Atwood Brian GChief Executive Officer, DirectorGrant(A)1.3M$0
Mar 25, 2024Byrnes MichaelDirectorGrant(A)113K$0
Mar 25, 2024Carter Charles RossChief Financial OfficerGrant(A)395K$0
Mar 25, 2024Corey DanielChief Technical Officer, DirectorGrant(A)857K$0
Mar 25, 2024Ehrlich Christopher BDirectorGrant(A)572K$0
Mar 25, 2024Laporte KathleenDirectorGrant(A)113K$0
Mar 25, 2024Rapaport RobynDirectorGrant(A)113K$0
Mar 25, 2024Rolfe LindseyDirectorGrant(A)113K$0
Feb 14, 2024Ehrlich Christopher BDirectorOther(J)1.1M
Feb 14, 2024Ehrlich Christopher BDirectorOther(J)4.2M
Feb 14, 2024Ehrlich Christopher BDirectorOther(J)479K
Feb 14, 2024Ehrlich Christopher BDirectorOther(J)4K
Feb 14, 2024Ehrlich Christopher BDirectorOther(J)5K$0
Feb 14, 2024Ehrlich Christopher BDirectorOther(J)350K$0
Feb 14, 2024Ehrlich Christopher BDirectorOther(J)175$1,000.00$175K
Feb 14, 2024Ehrlich Christopher BDirectorOther(J)2K$1,000.00$1.6M
Feb 14, 2024Ehrlich Christopher BDirectorOption exercise(M)2K$1,000.00$1.6M
Feb 14, 2024Ehrlich Christopher BDirectorOption exercise(M)0$0
Feb 14, 2024Ehrlich Christopher BDirectorGrant(A)100$1,000.00$100K
Feb 14, 2024Phoenix Biotech Sponsor, LLC10% OwnerOther(J)1.1M
Feb 14, 2024Phoenix Biotech Sponsor, LLC10% OwnerOther(J)4.2M
Feb 14, 2024Phoenix Biotech Sponsor, LLC10% OwnerOption exercise(M)0$0
Feb 14, 2024Phoenix Biotech Sponsor, LLC10% OwnerOption exercise(M)2K$1,000.00$1.6M
Feb 14, 2024Phoenix Biotech Sponsor, LLC10% OwnerOther(J)350K$0
Feb 14, 2024Phoenix Biotech Sponsor, LLC10% OwnerOther(J)2K$1,000.00$1.6M
Feb 14, 2024Fisher Douglas CarlPresidentOther(J)43K
Feb 14, 2024Fisher Douglas CarlPresidentGrant(A)50$1,000.00$50K
Feb 14, 2024Fisher Douglas CarlPresidentOther(J)5K$0
Feb 14, 2024Geffken Daniel E.Chief Financial OfficerOther(J)10K
Feb 14, 2024Kosacz BarbaraDirectorOther(J)6K
Feb 14, 2024Loewy Caroline MDirectorOther(J)6K
Feb 14, 2024Atwood Brian GChief Executive Officer, DirectorOther(J)101K
Feb 14, 2024Atwood Brian GChief Executive Officer, DirectorOther(J)148K
Feb 14, 2024Atwood Brian GChief Executive Officer, DirectorGrant(A)1K$1,000.00$1.0M
Feb 14, 2024Laporte KathleenDirectorGrant(A)50$1,000.00$50K
Feb 14, 2024Atwood Brian GChief Executive Officer, DirectorOther(J)101K
Feb 14, 2024Atwood Brian GChief Executive Officer, DirectorOther(J)148K
Feb 14, 2024Atwood Brian GChief Executive Officer, DirectorGrant(A)14K$0
Feb 14, 2024Atwood Brian GChief Executive Officer, DirectorGrant(A)1K$1,000.00$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 2021-03-292026-07-14. Earlier history is backfilling; this window widens as it deepens.

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