# AMG Pantheon Master Fund, LLC — Form D/A

AMG Pantheon Master Fund, LLC of STAMFORD, CT, a pooled investment fund, filed a Form D amendment with the SEC on 2021-01-06. $253.6M was reported sold. Industry: Pooled Investment Fund.

## Offering

- Filed: 2021-01-06
- Form: D/A
- Accession: 0001609212-21-000002
- Industry: Pooled Investment Fund
- Exemptions: 06b
- Amount sold: $253.6M
- Investors: 3
- Date of first sale: 2016-01-01
- Security types: fund interests
- SEC file number: 021-254625

## Issuer

- Name: AMG Pantheon Master Fund, LLC
- CIK: 0001609212
- Entity type: Limited Liability Company
- Jurisdiction: DELAWARE
- Incorporated: 2014
- Address: 680 WASHINGTON BOULEVARD, SUITE 500, STAMFORD, CT, 06901
- Phone: 877-355-1566

## Officers, directors & promoters (37)

_Showing 25 of 37 people._

| Name | Role | Location |
| --- | --- | --- |
| CHRISTINE C CARSMAN | Director | STAMFORD, CT |
| DOUGLAS A KELLER | Executive Officer | SAN FRANCISCO, CA |
| PATRICK J SPELLMAN | Executive Officer | STAMFORD, CT |
| GARRET W WESTON | Director | STAMFORD, CT |
| THOMAS L DISBROW | Executive Officer | STAMFORD, CT |
| KEITHA L KINNE | Executive Officer | STAMFORD, CT |
| JOHN A STARACE | Executive Officer | STAMFORD, CT |
| VICTORIA L SASSINE | Director | STAMFORD, CT |
| ERIC L RAKOWSKI | Director | STAMFORD, CT |
| KURT L KEILHACKER | Director | STAMFORD, CT |
| SUSAN L LONG MCANDREWS | Executive Officer | STAMFORD, CT |
| CHRISTINE C CARSMAN | Executive Officer | STAMFORD, CT |
| HECTOR D ROMAN | Executive Officer | STAMFORD, CT |
| SUSAN C LONG MCANDREWS | Executive Officer | STAMFORD, CT |
| THOMAS C DISBROW | Executive Officer | STAMFORD, CT |
| GERALD F DILLENBURG | Executive Officer | GREENWICH, CT |
| CHRISTOPHER R TOWNSEND | Executive Officer | GREENWICH, CT |
| SHELDON L CHANG | Executive Officer | SAN FRANCISCO, CA |
| KURT S KEILHACKER | Director | GREENWICH, CT |
| LESLIE J OSBORN | Executive Officer | GREENWICH, CT |
| VICTORIA S SASSINE | Director | GREENWICH, CT |
| JEFFREY T CERUTTI | Executive Officer | GREENWICH, CT |
| DONALD S RUMERY | Executive Officer | GREENWICH, CT |
| SUSAN L GIACIN | Executive Officer | SAN FRANCISCO, CA |
| ERIC S RAKOWSKI | Director | GREENWICH, CT |

## Other filings by this issuer (10)

| Filed | Form | Offering | Sold |
| --- | --- | --- | --- |
| [2026-01-09](https://search.stillhousedata.com/formd/0001609212-26-000001) | D/A | — | $5.1B |
| [2025-01-10](https://search.stillhousedata.com/formd/0001609212-25-000001) | D/A | — | $3.7B |
| [2024-01-10](https://search.stillhousedata.com/formd/0001609212-24-000001) | D/A | — | $2.3B |
| [2023-01-10](https://search.stillhousedata.com/formd/0001609212-23-000001) | D/A | — | $1.3B |
| [2022-01-11](https://search.stillhousedata.com/formd/0001609212-22-000001) | D/A | — | $699.6M |
| [2021-11-03](https://search.stillhousedata.com/formd/0001609212-21-000007) | D/A | — | $580.3M |
| [2020-01-06](https://search.stillhousedata.com/formd/0001609212-20-000001) | D/A | — | $143.8M |
| [2019-01-04](https://search.stillhousedata.com/formd/0001609212-19-000001) | D/A | — | $92.6M |
| [2017-01-06](https://search.stillhousedata.com/formd/0001609212-17-000001) | D/A | — | $50.0M |
| [2016-01-06](https://search.stillhousedata.com/formd/0001609212-16-000006) | D | — | $30.0M |

## More

- [CIK 1609212 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1609212&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/formd/0001609212-21-000002.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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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.
