SEC ownership of Iambic Therapeutics, Inc.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001997038.

Comparable stake leader

Catalio Access Fund VIII, LLC

Disclosed value leader

—

Comparable rows

0/16

Latest evidence

16 Oct 2026

Top shareholders Insider holders Latest transactions
Parsed ownership sources
3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
Largest SEC-reported holder
Catalio Access Fund VIII, LLC
Ranking: Comparable ownership first, then disclosed value
Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 1 signal
Latest parsed ownership date
16 Oct 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0001997038
Issuer location
San Diego, CA

Ownership snapshot

Top shareholders of Iambic Therapeutics, Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
Catalio Access Fund VIII,...
Disclosed value leader
—
Comparable rows
0/16
Latest evidence
16 Oct 2026
3/4/5 Some rows are evidence-backed but not safely comparable across classes. 16 rows are not safely comparable across share classes. Showing 1-8 of 16 holder rows.

Quick read

SEC ownership evidence is available, but the rows are not safely comparable across share classes.

0 of 16 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Catalio Access Fund VIII, LLC's linked filing trail.
Detailed SEC evidence table Showing 1-8 of 16 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
Catalio Access Fund VIII, LLC
3/4/5
10%+ Owner
3/4/5
—
denominator unverified
—
742,546 shares
 — 16 Oct 2026
Catalio BH SPV, LLC
3/4/5
10%+ Owner
3/4/5
—
denominator unverified
—
742,546 shares
 — 16 Oct 2026
Catalio Capital Management, LP
3/4/5
10%+ Owner
3/4/5
—
denominator unverified
—
742,546 shares
 — 16 Oct 2026
Catalio Nexus Fund III, LP
3/4/5
10%+ Owner
3/4/5
—
denominator unverified
—
742,546 shares
 — 16 Oct 2026
George C. Petrocheilos
3/4/5
10%+ Owner
3/4/5
—
denominator unverified
—
742,546 shares
 — 16 Oct 2026
Frederick R. Manby
3/4/5
Chief Technology Officer, Director
3/4/5
—
mixed-class rows
—
2,655,865 shares
mixed-class rows
 — 14 Oct 2026
Thomas F. Miller
3/4/5
Chief Executive Officer, Director
3/4/5
—
mixed-class rows
—
2,203,956 shares
mixed-class rows
 — 14 Oct 2026
R. Jacob Vogelstein
3/4/5
Director
3/4/5
—
mixed-class rows
—
762,846 shares
mixed-class rows
 — 16 Oct 2026
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

No eligible buy or sell activity is available for this window. No eligible Buy or Sell transactions are available in this dataset since 21 Oct 2025.

Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 0 Shares: 0
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 0 $0 $0 $0
3-6 0 0 $0 $0 $0
6-9 0 0 $0 $0 $0
9-12 0 0 $0 $0 $0

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-17 of 17 reporting-owner rows connected to Iambic Therapeutics, Inc.. Open a relationship link for the CIK-to-CIK filing trail.

Rows
17
Largest Forms 3/4/5 holder
Thomas F. Miller
Net 12M change
$0
Latest report
16 Oct 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Thomas F. Miller Chief Executive Officer, Director Mixed 14 Oct 2026
Frederick R. Manby Chief Technology Officer, Director Mixed 14 Oct 2026
Neil Josephson Chief Medical Officer Mixed 14 Oct 2026
Peter A. Olson Chief Scientific Officer Mixed 14 Oct 2026
Michael Secora CFO & Chief Corp Dev Ofcr Mixed 16 Oct 2026
Samit Hirawat Director Mixed 14 Oct 2026
Evan Lockwood Rachlin Director Mixed 16 Oct 2026
William H. Rastetter Director, Chairperson of the Board Mixed 16 Oct 2026
Shalini Sharp Director Mixed 14 Oct 2026
Mary Tagliaferri Director Mixed 14 Oct 2026
R. Jacob Vogelstein Director Mixed 16 Oct 2026
Emster Kurt von Director Mixed 14 Oct 2026
Catalio Capital Management, LP 10%+ Owner Mixed 16 Oct 2026
Catalio BH SPV, LLC 10%+ Owner Mixed 16 Oct 2026
Catalio Nexus Fund III, LP 10%+ Owner Mixed 16 Oct 2026
Catalio Access Fund VIII, LLC 10%+ Owner Mixed 16 Oct 2026
George C. Petrocheilos 10%+ Owner Mixed 16 Oct 2026

Recent insider transactions for Iambic Therapeutics, Inc.

Showing up to 300 recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % SEC-reported value SEC-reported price Shares Shares owned Date Ownership
Catalio Capital Management, LP IAM Common Stock Conversion of derivative security 4,196,585 1,995,749 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Common Stock Conversion of derivative security 4,196,585 1,995,749 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Common Stock Conversion of derivative security 4,196,585 1,995,749 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Common Stock Conversion of derivative security 4,196,585 1,995,749 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Common Stock Conversion of derivative security 4,196,585 1,995,749 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Convertible Promissory Notes Conversion of derivative security -100% -742,546 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Convertible Promissory Notes Conversion of derivative security -100% -742,546 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Convertible Promissory Notes Conversion of derivative security -100% -742,546 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Convertible Promissory Notes Conversion of derivative security -100% -742,546 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Convertible Promissory Notes Conversion of derivative security -100% -742,546 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series B-4 Convertible Preferred Stock Conversion of derivative security -100% -1,458,290 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series B-4 Convertible Preferred Stock Conversion of derivative security -100% -1,458,290 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series B-4 Convertible Preferred Stock Conversion of derivative security -100% -1,458,290 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series B-4 Convertible Preferred Stock Conversion of derivative security -100% -1,458,290 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series B-4 Convertible Preferred Stock Conversion of derivative security -100% -1,458,290 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series B-3 Convertible Preferred Stock Conversion of derivative security -100% -122,684 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series B-3 Convertible Preferred Stock Conversion of derivative security -100% -122,684 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series B-3 Convertible Preferred Stock Conversion of derivative security -100% -122,684 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series B-3 Convertible Preferred Stock Conversion of derivative security -100% -122,684 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series B-3 Convertible Preferred Stock Conversion of derivative security -100% -122,684 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series B Convertible Preferred Stock Conversion of derivative security -100% -731,187 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series B Convertible Preferred Stock Conversion of derivative security -100% -731,187 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series B Convertible Preferred Stock Conversion of derivative security -100% -731,187 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series B Convertible Preferred Stock Conversion of derivative security -100% -731,187 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series B Convertible Preferred Stock Conversion of derivative security -100% -731,187 0 16 Oct 2026 See footnote
Catalio Capital Management, LP IAM Series A Convertible Preferred Stock Conversion of derivative security -100% -1,141,878 0 16 Oct 2026 See foonote
Catalio Capital Management, LP IAM Series A Convertible Preferred Stock Conversion of derivative security -100% -1,141,878 0 16 Oct 2026 See foonote
Catalio Capital Management, LP IAM Series A Convertible Preferred Stock Conversion of derivative security -100% -1,141,878 0 16 Oct 2026 See foonote
Catalio Capital Management, LP IAM Series A Convertible Preferred Stock Conversion of derivative security -100% -1,141,878 0 16 Oct 2026 See foonote
Catalio Capital Management, LP IAM Series A Convertible Preferred Stock Conversion of derivative security -100% -1,141,878 0 16 Oct 2026 See foonote
R. Jacob Vogelstein IAM Common Stock Conversion of derivative security 4,196,585 1,995,749 16 Oct 2026 See footnote
R. Jacob Vogelstein IAM Convertible Promissory Notes Conversion of derivative security -100% -742,546 0 16 Oct 2026 See footnote
R. Jacob Vogelstein IAM Series B-4 Convertible Preferred Stock Conversion of derivative security -100% -1,458,290 0 16 Oct 2026 See footnote
R. Jacob Vogelstein IAM Series B-3 Convertible Preferred Stock Conversion of derivative security -100% -122,684 0 16 Oct 2026 See footnote
R. Jacob Vogelstein IAM Series B Convertible Preferred Stock Conversion of derivative security -100% -731,187 0 16 Oct 2026 See footnote
R. Jacob Vogelstein IAM Series A Convertible Preferred Stock Conversion of derivative security -100% -1,141,878 0 16 Oct 2026 See footnote
Michael Secora IAM Common Stock Conversion of derivative security 28.1% 61,342 279,902 16 Oct 2026 Direct
Michael Secora IAM Series B-3 Convertible Preferred Stock Conversion of derivative security -100% -61,342 0 16 Oct 2026 Direct
William H. Rastetter IAM Common Stock Conversion of derivative security 200,920 200,920 16 Oct 2026 See footnote
William H. Rastetter IAM Convertible Promissory Notes Conversion of derivative security -100% -8,341 0 16 Oct 2026 See footnote
William H. Rastetter IAM Series B-4 Convertible Preferred Stock Conversion of derivative security -100% -14,972 0 16 Oct 2026 See footnote
William H. Rastetter IAM Series B-3 Convertible Preferred Stock Conversion of derivative security -100% -36,805 0 16 Oct 2026 See footnote
William H. Rastetter IAM Series B-2 Convertible Preferred Stock Conversion of derivative security -100% -64,001 0 16 Oct 2026 See footnote
William H. Rastetter IAM Series B Convertible Preferred Stock Conversion of derivative security -100% -76,801 0 16 Oct 2026 See footnote
Evan Lockwood Rachlin IAM Common Stock Purchase 38.4% 718,750 2,588,248 16 Oct 2026 See footnote
Evan Lockwood Rachlin IAM Common Stock Conversion of derivative security 1,927,252 1,869,498 16 Oct 2026 See footnote
Evan Lockwood Rachlin IAM Convertible Promissory Notes Conversion of derivative security -100% -410,762 0 16 Oct 2026 See footnote
Evan Lockwood Rachlin IAM Series B-3 Convertible Preferred Stock Conversion of derivative security -100% -306,711 0 16 Oct 2026 See footnote
Evan Lockwood Rachlin IAM Series B Convertible Preferred Stock Conversion of derivative security -100% -1,209,779 0 16 Oct 2026 See footnote
Emster Kurt von IAM Stock Option (right to buy) Award 20,300 20,300 14 Oct 2026 Direct
* marks a reported price that did not pass the local price check.
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