Form D · Hedge Fund

Westbourne River Event Fund

New York, NY · CIK 0001554146

Offering snapshot reported Apr 7, 2026 · SEC filing

Reported sold
$923M
Indefinite offering
Investors reported
113
Form D · investor count
Minimum accepted
$100K
Reported outside-investor minimum
First sale
Jul 1, 2010
As reported in this filing

Fundraising history

Reported sold
Reported amount sold by Form D filing date$0$461M$923MJul 8, 2021: $852,241,198.00Jul 8, 2021Jul 8, 2022: $852,241,198.00Jul 8, 2022Mar 27, 2024: $872,441,298.00Mar 27, 2024Apr 1, 2025: $872,441,298.00Apr 1, 2025Apr 7, 2026: $922,741,298.00Apr 7, 2026

Dates are filing dates, not cash receipt dates. Decreases are reported revisions, not evidence of withdrawals. Separate offering histories are not added together.

What changed?

Latest filing versus its linked predecessor, where available.

  • Reported sold$872,441,298 → $922,741,298

Filing history

Scroll to see all columns →

FiledFiling typeReported soldChange vs linked filingInvestorsSource
Apr 7, 2026Amendment$922,741,298$50,300,000vs Apr 1, 2025113SEC filing
Apr 1, 2025Amendment$872,441,298$0vs Mar 27, 2024113SEC filing
Mar 27, 2024Amendment$872,441,298$20,200,100vs Jul 8, 2022113SEC filing
Jul 8, 2022Amendment$852,241,198$0vs Jul 8, 2021112SEC filing
Jul 8, 2021Amendment$852,241,198No comparisonNot reportedSEC filing
Jul 8, 2020Amendment$882,030,149$51,419,526vs Jul 12, 201981SEC filing
Jul 12, 2019Amendment$830,610,623$59,816,696vs Jul 11, 201881SEC filing
Jul 11, 2018Amendment$770,793,927$54,808,913vs Jul 11, 201777SEC filing
Jul 11, 2017Amendment$715,985,014$146,788,085vs Jul 11, 201676SEC filing
Jul 11, 2016Amendment$569,196,929$32,709,517vs Jul 10, 201570SEC filing
Jul 11, 2016Amendment$569,196,929$32,709,517vs Jul 10, 201570SEC filing
Jul 10, 2015Amendment$536,487,412$67,888,756vs Jul 11, 201470SEC filing
Jul 11, 2014Amendment$468,598,656$333,257,958vs Jul 16, 201389SEC filing
Jul 16, 2013Amendment$135,340,698$91,940,698vs Jul 16, 201213SEC filing
Jul 16, 2012Initial$43,400,000No comparison5SEC filing

Offering details

Securities
Equity, Pooled investment fund
Exemptions
06b, 3C, 3C.7
Duration over one year
Yes
Business combination
No
Sales commissions
$0
Finders' fees
$0
Form D file number
021-181277

Source: Form D, filed Apr 7, 2026. Minimum accepted may differ from a standard advertised minimum.

Fund connections

The linked fund shows its most recently reported ADV details.

Matched by reported Form D file number

WESTBOURNE RIVER EVENT FUND

Investment adviser: TETRAGON PARTNERS L.P.

Gross asset value
Not reported
Beneficial owners
Not reported
ADV minimum commitment
Not reported

Reported in Form ADV on Jun 4, 2026. Fund assets and beneficial owners measure different things from Form D sales and investors.

Service providers

No provider names available in this fund's imported disclosure.

Provider details
Annual audit
Not reported
Prime brokers
Not reported
Custodians
Not reported
Administrator other than the adviser
Not reported
External marketing
Not reported
Filing source

Form ADV 2110136 · Jun 4, 2026 · Schedule D 7.B.(1), fund 805-3032238530

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

People & organizations

Current and past Form D appearances. These existing records do not establish a person's current role or uniquely identify them across issuers.

People and organizations reported in Form D filings
NameReported role
Gregory Cheng Director
Patrick Rupert Cottrell Director
Patrick G.G. Dear Director
Simon Edwards Director
Reade Griffith Director
Deron J. Haley Director
Stephen Prince Director
Bradford E. Willmore Director

Issuer details

Industry: Pooled Investment Fund (See others in industry)

Address:
399 Park Avenue 22 Nd Floor
New York, NY, 10022