SEC Filing Record

Offering Amount

$0.2M

Strategy

Hedge

Exemption

06c

Date Filed

Jun 04, 2026

0002055338-26-000002

View on SEC EDGAR →

37A Read

The $0M target signals a placeholder filing, likely amended to reflect actual fund size or terms after initial setup; the single named GP (Theodore Rosenthal) paired with Mason Park Investments, LLC as co-GP indicates a typical two-entity structure where the individual GP retains decision authority while the entity provides operational wrapper, a common pattern when a manager is formalizing their first institutional vehicle.

This is Mason Park Investments' first detected EDGAR filing, meaning Rosenthal is launching his inaugural institutional hedge fund rather than rolling a prior strategy into a new wrapper; the 06c exemption—available to advisers with less than $150M AUM—confirms the manager is operating below institutional scale and likely raising from a targeted LP base rather than via broad syndication.

Filing an amendment in mid-2026 suggests the manager either revised LP terms or fund capacity after initial launch interest, or is correcting administrative details before final closes; hedge fund amendments at this stage typically reflect early commitments that forced a replan of target size or strategy focus.

Before committing, verify whether Mason Park Investments or Theodore Rosenthal personally have any prior fund management history outside the EDGAR system (fund-of-funds placements, separately managed accounts, or sub-advised vehicles), as first-time institutional managers without co-investment track record present heightened execution risk in a hedge fund structure.

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Principals

General Partners & Executives

Theodore Rosenthal n/a Mason Park Investments, LLC

Mason Park Opportunity Fund, LP