# ALTERRA IOS MANAGER, LLC

ALTERRA IOS MANAGER, LLC of RADNOR, PA is an SEC-registered investment adviser.

## Registration

- CRD: 324445
- Type: SEC-registered investment adviser
- SEC file number: 801-127256
- Location: 150 RADNOR CHESTER ROAD, SUITE E-100, RADNOR, PA, 19087
- Phone: 215-240-1231
- Latest filing: 2026-03-27
- Regulatory AUM: $3.2B
- Discretionary AUM: $3.2B
- Clients: 44
- Accounts: 5

## Business model

- Compensation: % of AUM, Performance
- Clients served: Investment cos

## Officers, owners & control persons (10)

| Name | Role | Location |
| --- | --- | --- |
| [Matthew Liam Pfeiffer](https://search.stillhousedata.com/person/707964) | MANAGING PARTNER / CHIEF INVESTMENT OFFICER | — |
| [Jeffrey Joseph Pustizzi](https://search.stillhousedata.com/person/707965) | PARTNER / GENERAL COUNSEL | — |
| [Leonidas Savas Addimando](https://search.stillhousedata.com/person/707966) | MANAGING PARTNER / CHIEF EXECUTIVE OFFICER | — |
| [Scott Jeffrey Whittle](https://search.stillhousedata.com/person/707967) | CHIEF FINANCIAL OFFICER & CHIEF COMPLIANCE OFFICER | — |
| [WHITTLE W JEFFREY](https://search.stillhousedata.com/person/780227) | CHIEF FINANCIAL OFFICER & CHIEF COMPLIANCE OFFICER | — |
| [CANNING JOHN JOSEPH](https://search.stillhousedata.com/person/804406) | CHIEF COMPLIANCE OFFICER | — |
| [PFEIFFER MATTHEW LIAM](https://search.stillhousedata.com/person/874424) | MANAGING PARTNER / CHIEF INVESTMENT OFFICER; MANAGINGPARTNER / CHIEF INVESTMENT OFFICER | — |
| [Pustizzi Jeffrey Joseph](https://search.stillhousedata.com/person/874425) | PARTNER / GENERAL COUNSEL | — |
| [Addimando Leonidas Savas](https://search.stillhousedata.com/person/874426) | MANAGING PARTNER / CHIEF EXECUTIVE OFFICER | — |
| [Baker Thomas Chester](https://search.stillhousedata.com/person/874427) | CHIEF FINANCIAL OFFICER; CHIEF FINANCIAL OFFICER & CHIEF COMPLIANCE OFFICER | — |


## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/324445/brochure
- Similar advisers: https://search.stillhousedata.com/firm/324445/similar
- Related entities: https://search.stillhousedata.com/firm/324445/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/324445

---

Source: public SEC Form ADV 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.