AltMountain

Lansing Management Onshore LP

New York, NY · CIK 1691909 · Managed by Lansing Management, LP

Lansing Management Onshore LP is a hedge fund based in New York, New York. According to its most recent Form D, filed Dec 11, 2025, the fund has sold $114,122,656 of interests to 71 investors since its first sale in Jan 2017. The minimum investment it accepts from an outside investor is $50,000. It relies on the Section 3(c)(1) exclusion, which limits it to 100 beneficial owners, typically accredited investors. The offering uses Rule 506(b), which does not permit general solicitation. Related persons named in the filing include Lansing Management General Partner, L.P.

Performance

13F estimate · public data only

No verified returns have been reported for this fund. As a rough guide, Lansing Management, LP, which manages it, disclosed U.S. stock holdings that returned an estimated +2.5% 2026 YTD through Jun 30 (S&P 500: +9.5%), based only on its public 13F filings. Over a longer period, Q3 2024 to Q2 2026, the estimate is +19.8% (S&P 500: +37.2%).

This estimate covers the firm's whole disclosed long U.S. stock portfolio. It is not this fund's return and excludes dividends, fees, shorts, derivatives, bonds, cash and trading within each quarter.

Is this your fund? Report your monthly returns · How performance works

Total raised
$114,122,656Cumulative sales reported on Form D
Investors
71
First sale
Jan 3, 2017
Minimum investment
$50,000
Who can invest
Accredited investorsSection 3(c)(1): up to 100 beneficial owners
Offering exemption
Rule 506(b)No general advertising
Key people and entities
Lansing Management General Partner, L.P
Latest Form D
Dec 11, 2025

From SEC filings, not verified. This page republishes the fund's Form D as filed. It is not an offer, solicitation or recommendation, and AltMountain has not reviewed the fund. “Raised” is cumulative sales, not current assets or performance. Private funds are speculative, illiquid and generally limited to accredited investors or qualified purchasers. Full disclosures · Request a correction

Questions about Lansing Management Onshore LP

What is the minimum investment for Lansing Management Onshore LP?

According to its latest Form D, filed Dec 11, 2025, the minimum investment Lansing Management Onshore LP accepts from an outside investor is $50,000.

Who can invest in Lansing Management Onshore LP?

Lansing Management Onshore LP is generally open only to accredited investors, and it may have no more than 100 beneficial owners because it relies on Section 3(c)(1). It uses Rule 506(b), which does not allow general advertising.

How much has Lansing Management Onshore LP raised?

Lansing Management Onshore LP reports $114,122,656 sold from 71 investors on its Form D filed Dec 11, 2025. This is cumulative sales since the offering began, not current assets or performance.

Where is Lansing Management Onshore LP based?

Lansing Management Onshore LP is based in New York, New York and is managed by Lansing Management, LP.

When did Lansing Management Onshore LP launch?

Lansing Management Onshore LP reports its first sale in Jan 2017.

Size compared with every hedge fund

Raised more than 57% of the 2,544 hedge funds based in New York, and more than 60% of all 10,308 that report sales.

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