Monitor for the company's IPO filing (S-1) which will trigger conversion of these preferred shares and notes into common stock, providing clarity on the insider's eventual common stock position.
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Executive Summary
William Rastetter, Chairperson of the Board of Iambic Therapeutics, filed a Form 3 initial statement of beneficial ownership. The filing discloses holdings of convertible preferred stock, stock options, and convertible promissory notes, all of which convert into common stock upon an IPO. This is a routine insider filing with no trading activity or material new information.
Key Facts
- William Rastetter is Chairperson of the Board of Iambic Therapeutics.
- The Form 3 discloses beneficial ownership of Series B, B-2, B-3, B-4 Convertible Preferred Stock, stock options, and Convertible Promissory Notes.
- All convertible securities convert into common stock on a one-to-one basis immediately prior to the completion of an IPO.
- The Convertible Promissory Notes have a conversion price tied to the IPO price with a 15% discount and a $900.0 million valuation cap.
- The stock option vests over time, with 25% vested on March 9, 2024 and monthly vesting thereafter.
Financial Impact
No financial impact; the filing is a routine initial ownership report with no transaction.
Risk Factors
- No material risks identified from this routine filing.
Investment Themes
Documents Analyzed
This report is based on 4 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 3 Filing (Primary) | 0001205903-26-000009 |
| Document: 0001205903-26-000009-index-headers.html | 0001205903-26-000009 |
| Document: 0001205903-26-000009-index.html | 0001205903-26-000009 |
| Document: 0001205903-26-000009.txt | 0001205903-26-000009 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 19, 2026 6d ago | Insider Buy | $16.01 $15.80 | ▼ −1.31% | ▼ −1.84% | $14.41 (−9.99%) |
Oct 16, 2026 10d ago | 8-K | $16.34 $16.01 | ▼ −2.02% | ▼ −2.35% | $14.41 (−11.81%) |
Oct 15, 2026 11d ago | 424B4 | $23.81 $16.34 | ▼ −31.37% | ▼ −31.80% | $14.41 (−39.48%) |
Oct 15, 2026 11d ago | EFFECT | $18.91 $23.81 | ▲ +25.91% | ▲ +27.02% | $14.41 (−23.80%) |
Oct 14, 2026 11d ago | 3 | $18.91 $23.81 | ▲ +25.91% | ▲ +27.02% | $14.41 (−23.80%) |
Oct 14, 2026 11d ago | 3 | $18.91 $23.81 | ▲ +25.91% | ▲ +27.02% | $14.41 (−23.80%) |
Oct 14, 2026 11d ago | 3 | $18.91 $23.81 | ▲ +25.91% | ▲ +27.02% | $14.41 (−23.80%) |
Oct 14, 2026 11d ago | 3 | $18.91 $23.81 | ▲ +25.91% | ▲ +27.02% | $14.41 (−23.80%) |
Oct 14, 2026 11d ago | 3 | $18.91 $23.81 | ▲ +25.91% | ▲ +27.02% | $14.41 (−23.80%) |
Oct 14, 2026 11d ago | 3 | $18.91 $23.81 | ▲ +25.91% | ▲ +27.02% | $14.41 (−23.80%) |
US Market Status
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