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.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 14, 2026 | Montano Maricel Perea | Chief Legal Officer | Other(J) | 42K | — | — |
| Jul 14, 2026 | Montano Maricel Perea | Chief Legal Officer | Other(J) | 65 | — | — |
| Jul 14, 2026 | Montano Maricel Perea | Chief Legal Officer | Disposed to issuer(D) | 37K | — | $0 |
| Jul 14, 2026 | Montano Maricel Perea | Chief Legal Officer | Disposed to issuer(D) | 11K | — | $0 |
| Jul 14, 2026 | Limber Joseph M | Director | Other(J) | 10K | — | — |
| Jul 14, 2026 | Limber Joseph M | Director | Disposed to issuer(D) | 10K | — | — |
| Jul 14, 2026 | Limber Joseph M | Director | Disposed to issuer(D) | 20K | — | — |
| Jul 14, 2026 | Limber Joseph M | Director | Disposed to issuer(D) | 8K | — | $0 |
| Jul 14, 2026 | Limber Joseph M | Director | Disposed to issuer(D) | 2K | — | $0 |
| Jul 14, 2026 | Limber Joseph M | Director | Disposed to issuer(D) | 5K | — | $0 |
| Jul 14, 2026 | Limber Joseph M | Director | Disposed to issuer(D) | 8K | — | $0 |
| Jul 14, 2026 | Limber Joseph M | Director | Disposed to issuer(D) | 6K | — | $0 |
| Jul 14, 2026 | Limber Joseph M | Director | Disposed to issuer(D) | 5K | — | $0 |
| Jul 14, 2026 | Limber Joseph M | Director | Disposed to issuer(D) | 9K | — | $0 |
| Jul 14, 2026 | Limber Joseph M | Director | Disposed to issuer(D) | 11K | — | $0 |
| Jul 14, 2026 | Limber Joseph M | Director | Disposed to issuer(D) | 10K | — | $0 |
| Jul 14, 2026 | Limber Joseph M | Director | Disposed to issuer(D) | 10K | — | $0 |
| Jul 14, 2026 | Kosacz Barbara | Director | Other(J) | 6K | — | — |
| Jul 14, 2026 | Kosacz Barbara | Director | Disposed to issuer(D) | 20K | — | $0 |
| Jul 14, 2026 | Kosacz Barbara | Director | Disposed to issuer(D) | 8K | — | $0 |
| Jul 14, 2026 | Kosacz Barbara | Director | Disposed to issuer(D) | 6K | — | $0 |
| Jul 14, 2026 | Kosacz Barbara | Director | Disposed to issuer(D) | 5K | — | $0 |
| Jul 14, 2026 | Kosacz Barbara | Director | Disposed to issuer(D) | 9K | — | $0 |
| Jul 14, 2026 | Kosacz Barbara | Director | Disposed to issuer(D) | 11K | — | $0 |
| Jul 14, 2026 | Kosacz Barbara | Director | Disposed to issuer(D) | 10K | — | $0 |
| Jul 14, 2026 | Wyszomierski Jack L | Director | Other(J) | 22K | — | — |
| Jul 14, 2026 | Wyszomierski Jack L | Director | Disposed to issuer(D) | 8K | — | $0 |
| Jul 14, 2026 | Wyszomierski Jack L | Director | Disposed to issuer(D) | 2K | — | $0 |
| Jul 14, 2026 | Wyszomierski Jack L | Director | Disposed to issuer(D) | 5K | — | $0 |
| Jul 14, 2026 | Wyszomierski Jack L | Director | Disposed to issuer(D) | 8K | — | $0 |
| Jul 14, 2026 | Wyszomierski Jack L | Director | Disposed to issuer(D) | 6K | — | $0 |
| Jul 14, 2026 | Wyszomierski Jack L | Director | Disposed to issuer(D) | 5K | — | $0 |
| Jul 14, 2026 | Wyszomierski Jack L | Director | Disposed to issuer(D) | 9K | — | $0 |
| Jul 14, 2026 | Wyszomierski Jack L | Director | Disposed to issuer(D) | 11K | — | $0 |
| Jul 14, 2026 | Hughes Owen | Chief Executive Officer, Director | Other(J) | 191K | — | — |
| Jul 14, 2026 | Hughes Owen | Chief Executive Officer, Director | Other(J) | 752 | — | — |
| Jul 14, 2026 | Hughes Owen | Chief Executive Officer, Director | Disposed to issuer(D) | 102K | — | — |
| Jul 14, 2026 | Hughes Owen | Chief Executive Officer, Director | Disposed to issuer(D) | 100K | — | $0 |
| Jul 14, 2026 | Hughes Owen | Chief Executive Officer, Director | Disposed to issuer(D) | 75K | — | $0 |
| Jul 14, 2026 | Hughes Owen | Chief Executive Officer, Director | Disposed to issuer(D) | 116K | — | $0 |
| Jul 14, 2026 | Hughes Owen | Chief Executive Officer, Director | Disposed to issuer(D) | 133K | — | $0 |
| Jul 14, 2026 | Hernday Natasha | Director | Other(J) | 9K | — | — |
| Jul 14, 2026 | Hernday Natasha | Director | Disposed to issuer(D) | 4K | — | — |
| Jul 14, 2026 | Hernday Natasha | Director | Disposed to issuer(D) | 13K | — | $0 |
| Jul 14, 2026 | Hernday Natasha | Director | Disposed to issuer(D) | 5K | — | $0 |
| Jul 14, 2026 | Hernday Natasha | Director | Disposed to issuer(D) | 9K | — | $0 |
| Jul 14, 2026 | Hernday Natasha | Director | Disposed to issuer(D) | 11K | — | $0 |
| Jul 14, 2026 | Hernday Natasha | Director | Disposed to issuer(D) | 5K | — | $0 |
| Jul 14, 2026 | Sitko Bradley | Chief Investment Officer | Other(J) | 84K | — | — |
| Jul 14, 2026 | Sitko Bradley | Chief Investment Officer | Disposed to issuer(D) | 313 | — | — |
| Jul 14, 2026 | Sitko Bradley | Chief Investment Officer | Disposed to issuer(D) | 7K | — | — |
| Jul 14, 2026 | Sitko Bradley | Chief Investment Officer | Other(J) | 1K | — | — |
| Jul 14, 2026 | Sitko Bradley | Chief Investment Officer | Other(J) | 75 | — | — |
| Jul 14, 2026 | Sitko Bradley | Chief Investment Officer | Other(J) | 75 | — | — |
| Jul 14, 2026 | Sitko Bradley | Chief Investment Officer | Other(J) | 2K | — | — |
| Jul 14, 2026 | Sitko Bradley | Chief Investment Officer | Disposed to issuer(D) | 82 | — | — |
| Jul 14, 2026 | Sitko Bradley | Chief Investment Officer | Disposed to issuer(D) | 2K | — | — |
| Jul 14, 2026 | Sitko Bradley | Chief Investment Officer | Disposed to issuer(D) | 300K | — | $0 |
| Jul 14, 2026 | Sitko Bradley | Chief Investment Officer | Disposed to issuer(D) | 250K | — | $0 |
| Jul 14, 2026 | Sitko Bradley | Chief Investment Officer | Disposed to issuer(D) | 41K | — | $0 |
| Jul 14, 2026 | Sitko Bradley | Chief Investment Officer | Disposed to issuer(D) | 23K | — | $0 |
| Jul 14, 2026 | Perry Matthew D | Director | Other(J) | 24K | — | — |
| Jul 14, 2026 | Perry Matthew D | Director | Disposed to issuer(D) | 15K | — | $0 |
| Jul 14, 2026 | Perry Matthew D | Director | Disposed to issuer(D) | 5K | — | $0 |
| Jul 14, 2026 | Perry Matthew D | Director | Disposed to issuer(D) | 8K | — | $0 |
| Jul 14, 2026 | Perry Matthew D | Director | Disposed to issuer(D) | 6K | — | $0 |
| Jul 14, 2026 | Perry Matthew D | Director | Disposed to issuer(D) | 5K | — | $0 |
| Jul 14, 2026 | Perry Matthew D | Director | Disposed to issuer(D) | 9K | — | $0 |
| Jul 14, 2026 | Perry Matthew D | Director | Disposed to issuer(D) | 11K | — | $0 |
| Jul 14, 2026 | Trigilio Jeffrey | Chief Financial Officer | Other(J) | 104K | — | — |
| Jul 14, 2026 | Trigilio Jeffrey | Chief Financial Officer | Disposed to issuer(D) | 127K | — | $0 |
| Jul 14, 2026 | Trigilio Jeffrey | Chief Financial Officer | Disposed to issuer(D) | 26K | — | $0 |
| Jul 14, 2026 | Franklin Heather L | Director | Other(J) | 6K | — | — |
| Jul 14, 2026 | Franklin Heather L | Director | Disposed to issuer(D) | 17K | — | $0 |
| Jul 14, 2026 | Franklin Heather L | Director | Disposed to issuer(D) | 9K | — | $0 |
| Jul 14, 2026 | Franklin Heather L | Director | Disposed to issuer(D) | 11K | — | $0 |
| Jul 14, 2026 | Franklin Heather L | Director | Disposed to issuer(D) | 10K | — | $0 |
| Jul 14, 2026 | BVF Partners L P | 10% Owner | Tender(U) | 3.6M | — | — |
| Jul 14, 2026 | BVF Partners L P | 10% Owner | Tender(U) | 2.8M | — | — |
| Jul 14, 2026 | BVF Partners L P | 10% Owner | Tender(U) | 412K | — | — |
| Jul 14, 2026 | BVF Partners L P | 10% Owner | Tender(U) | 772K | — | — |
| May 21, 2026 | Limber Joseph M | Director | Grant(A) | 4K | — | $0 |
| May 21, 2026 | Franklin Heather L | Director | Grant(A) | 4K | — | $0 |
| May 21, 2026 | Hernday Natasha | Director | Grant(A) | 4K | — | $0 |
| May 21, 2026 | Perry Matthew D | Director | Grant(A) | 4K | — | $0 |
| May 21, 2026 | Kosacz Barbara | Director | Grant(A) | 4K | — | $0 |
| May 21, 2026 | Wyszomierski Jack L | Director | Grant(A) | 4K | — | $0 |
| May 14, 2026 | BVF Partners L P | 10% Owner | Conversion(C) | 2.3M | $4.03 | $9.3M |
| May 14, 2026 | BVF Partners L P | 10% Owner | Conversion(C) | 1.5M | $4.03 | $6.1M |
| May 14, 2026 | BVF Partners L P | 10% Owner | Conversion(C) | 412K | $4.03 | $1.7M |
| May 14, 2026 | BVF Partners L P | 10% Owner | Conversion(C) | 772K | $4.03 | $3.1M |
| May 14, 2026 | BVF Partners L P | 10% Owner | Conversion(C) | 2K | — | $0 |
| May 14, 2026 | BVF Partners L P | 10% Owner | Conversion(C) | 2K | — | $0 |
| May 14, 2026 | BVF Partners L P | 10% Owner | Conversion(C) | 412 | — | $0 |
| May 14, 2026 | BVF Partners L P | 10% Owner | Conversion(C) | 772 | — | $0 |
| Apr 20, 2026 | Montano Maricel Perea | Chief Legal Officer | Option exercise(M) | 3K | — | $0 |
| Apr 20, 2026 | Montano Maricel Perea | Chief Legal Officer | Option exercise(M) | 3K | — | $0 |
| Apr 20, 2026 | Sitko Bradley | Chief Investment Officer | Option exercise(M) | 4K | — | $0 |
| Apr 20, 2026 | Sitko Bradley | Chief Investment Officer | Option exercise(M) | 4K | — | $0 |
| Apr 20, 2026 | Hughes Owen | Chief Executive Officer, Director | Option exercise(M) | 11K | — | $0 |
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 2006-01-02 → 2026-09-03. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).
Connected pages for XOMA