---
title: "AMG Pantheon Master Fund, LLC SEC filings"
url: https://altstreet.investments/edgar/1609212
kind: edgar-entity
publisher: AltStreet (https://altstreet.investments)
license: Public factual pages may be read, quoted and cited with attribution and a link. Bulk redistribution is not permitted.
---

# AMG Pantheon Master Fund, LLC: SEC filings and what they report

| Field | Value |
| --- | --- |
| Entity | AMG Pantheon Master Fund, LLC |
| CIK | 1609212 |
| Filing family | Form D |
| Total sold (as reported) | $5,136,148,282 |
| Investors (as reported) | 3 |

## Filings (47 on record, newest first)

| Date | Form | Family | SEC link |
| --- | --- | --- | --- |
| August 31, 2026 | NPORT-P | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312526376088/ |
| August 10, 2026 | SC TO-I | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312526341322/ |
| June 12, 2026 | N-CEN | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312526269027/ |
| June 9, 2026 | N-CSR | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312526264015/ |
| June 1, 2026 | NPORT-P | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312526250908/ |
| March 23, 2026 | SC TO-I | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312526118609/ |
| February 27, 2026 | NPORT-P | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312526082467/ |
| January 9, 2026 | D/A | Form D | https://www.sec.gov/Archives/edgar/data/1609212/000160921226000001/ |
| December 22, 2025 | SC TO-I | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312525327616/ |
| December 8, 2025 | N-CSRS | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312525311211/ |
| December 1, 2025 | NPORT-P | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312525303668/ |
| September 22, 2025 | SC TO-I | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312525210066/ |
| August 29, 2025 | NPORT-P | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000114554925057537/ |
| June 23, 2025 | SC TO-I | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312525144199/ |
| June 13, 2025 | N-CEN | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000114554925039966/ |
| June 9, 2025 | N-CSR | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312525137917/ |
| May 30, 2025 | NPORT-P | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000114554925037907/ |
| March 24, 2025 | SC TO-I | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312525060909/ |
| March 3, 2025 | NPORT-P | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000114554925015850/ |
| January 10, 2025 | D/A | Form D | https://www.sec.gov/Archives/edgar/data/1609212/000160921225000001/ |
| December 23, 2024 | SC TO-I | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312524283701/ |
| December 9, 2024 | N-CSRS | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312524273351/ |
| November 29, 2024 | NPORT-P | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000114554924077155/ |
| September 23, 2024 | SC TO-I | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312524223307/ |
| August 29, 2024 | NPORT-P | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000114554924055137/ |
| June 24, 2024 | SC TO-I | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312524166358/ |
| June 13, 2024 | N-CEN | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000114554924036701/ |
| June 10, 2024 | N-CSR | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312524158323/ |
| May 24, 2024 | NPORT-P | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000114554924029428/ |
| March 21, 2024 | SC TO-I | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312524073344/ |
| February 29, 2024 | NPORT-P | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000114554924013240/ |
| January 10, 2024 | D/A | Form D | https://www.sec.gov/Archives/edgar/data/1609212/000160921224000001/ |
| December 6, 2023 | N-CSRS | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312523289877/ |
| November 22, 2023 | NPORT-P | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000114554923069139/ |
| August 29, 2023 | NPORT-P | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000114554923053894/ |
| June 14, 2023 | N-CEN | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000114554923036987/ |
| June 9, 2023 | N-CSR | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000119312523164471/ |
| May 17, 2023 | NPORT-P | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000114554923028117/ |
| February 28, 2023 | NPORT-P | Form N-PORT | https://www.sec.gov/Archives/edgar/data/1609212/000114554923013751/ |
| January 10, 2023 | D/A | Form D | https://www.sec.gov/Archives/edgar/data/1609212/000160921223000001/ |


## More

- Entity page (HTML, with events, parties and the platform record): https://altstreet.investments/edgar/1609212
- SEC EDGAR filing index: https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001609212&owner=include&count=40
- Signal history, evidence passages and the entity graph are AltStreet Terminal features: https://altstreet.investments/terminal

---

Source page: https://altstreet.investments/edgar/1609212
Machine index: https://altstreet.investments/llms.txt
AltStreet reads what platforms, funds and issuers file with the SEC and what they tell investors, and publishes the difference. Figures are as filed or as captured on the date stated; nothing here is investment advice.