# Cyril Joseph Mahon

Cyril Joseph Mahon of St. Peter Port, Y7 appears across SEC filings — Form ADV advisers, Form D, Reg A, and crowdfunding offerings. 19 filing roles across Form D (18), Form ADV (1).

## Filings (19)

| Filed | Source | Entity | Role | Location |
| --- | --- | --- | --- | --- |
| — | Form ADV | [COLLER INVESTMENT MANAGEMENT LTD](https://search.stillhousedata.com/firm/111035) | DIRECTOR | ST. PETER PORT |
| 2011-04-27 | Form D | [Coller International Partners VI, L.P.](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1519254&type=&dateb=&owner=include&count=40) | Executive Officer | GUERNSEY, XX |
| 2011-04-27 | Form D | [Coller International Partners VI Feeder Fund, L.P.](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1519255&type=&dateb=&owner=include&count=40) | Director | GUERNSEY, XX |
| 2021-03-04 | Form D | [Coller International Partners VIII Feeder Fund, L.P.](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1757415&type=&dateb=&owner=include&count=40) | Director | ST. PETER PORT, Y7 |
| 2021-03-04 | Form D | [Coller International Partners VIII, L.P.](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1757416&type=&dateb=&owner=include&count=40) | Director | ST. PETER PORT, Y7 |
| 2022-12-20 | Form D | [Coller GP-led & Direct Secondaries - C, SLP](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1952623&type=&dateb=&owner=include&count=40) | Executive Officer | LEUDELANGE, N4 |
| 2022-12-20 | Form D | [Coller LP Secondaries - C, SLP](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1952692&type=&dateb=&owner=include&count=40) | Executive Officer | LEUDELANGE, N4 |
| 2026-05-18 | Form D | [Coller International Partners IX - C, SLP](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1952719&type=&dateb=&owner=include&count=40) | Related Person | GRAND DUCHY OF LUXEMBOURG, N4 |
| 2026-05-18 | Form D | [Coller GP-led & Direct Secondaries - B, L.P.](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1952514&type=&dateb=&owner=include&count=40) | Related Person | ST PETER PORT, Y7 |
| 2026-05-18 | Form D | [Coller GP-led & Direct Secondaries - A, L.P.](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1952512&type=&dateb=&owner=include&count=40) | Related Person | ST PETER PORT, Y7 |
| 2026-05-18 | Form D | [Coller LP Secondaries - B, L.P.](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1952511&type=&dateb=&owner=include&count=40) | Related Person | ST PETER PORT, Y7 |
| 2026-05-18 | Form D | [Coller LP Secondaries - A, L.P.](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1952596&type=&dateb=&owner=include&count=40) | Related Person | ST PETER PORT, Y7 |
| 2026-05-18 | Form D | [Coller International Partners IX - B, L.P.](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1952590&type=&dateb=&owner=include&count=40) | Related Person | ST PETER PORT, Y7 |
| 2026-05-18 | Form D | [Coller International Partners IX - A, L.P.](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1952520&type=&dateb=&owner=include&count=40) | Related Person | ST PETER PORT, Y7 |
| 2023-12-06 | Form D | [C-SPEF Seed Vehicle, L.P.](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=2002958&type=&dateb=&owner=include&count=40) | Director | ST. PETER PORT, Y7 |
| 2024-05-10 | Form D | [CIP IX Co-Investment Vehicle 1, L.P.](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=2022138&type=&dateb=&owner=include&count=40) | Director | ST. PETER PORT, Y7 |
| 2025-02-20 | Form D | [CIP IX Co-Investment Vehicle 2, L.P.](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=2055668&type=&dateb=&owner=include&count=40) | Director | ST. PETER PORT, Y7 |
| 2025-04-24 | Form D | [Coller Private Equity Backed Notes & Loans II Ltd.](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=2065623&type=&dateb=&owner=include&count=40) | Director | GRAND CAYMAN, E9 |
| 2025-04-23 | Form D | [PBN II Equity Holdings SPV LP](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=2064575&type=&dateb=&owner=include&count=40) | Director | ST PETER PORT, Y7 |


---

Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.