Form D · Other Investment Fund

MACKAY MUNICIPAL CREDIT OPPORTUNITIES MASTER FUND LP

New York, NY · CIK 0001460030

Offering snapshot reported May 17, 2019 · SEC filing

Reported sold: $1.26M
Investors reported: 4
Minimum accepted: $1M
First sale: Mar 1, 2009

Fundraising history

Reported sold

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.

No comparable changes in the displayed metrics.

Filing history

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Filed	Filing type	Reported sold	Change vs linked filing	Investors	Source
May 17, 2019	Amendment	$1,260,000	$0vs May 18, 2018	4	SEC filing
May 18, 2018	Amendment	$1,260,000	$0vs May 18, 2017	4	SEC filing
May 18, 2017	Amendment	$1,260,000	$0vs May 20, 2016	4	SEC filing
May 20, 2016	Amendment	$1,260,000	$0vs May 20, 2015	4	SEC filing
May 20, 2015	Amendment	$1,260,000	$0vs May 30, 2014	4	SEC filing
May 30, 2014	Amendment	$1,260,000	$0vs May 31, 2013	4	SEC filing
May 31, 2013	Amendment	$1,260,000	$0vs Mar 22, 2012	4	SEC filing
Mar 22, 2012	Amendment	$1,260,000	$260,000vs Mar 24, 2011	4	SEC filing
Mar 24, 2011	Amendment	$1,000,000	$1,000,000vs Mar 26, 2010	1	SEC filing
Mar 26, 2010	Amendment	$0	No comparison	0	SEC filing
Mar 13, 2009	Paper	Not reported	No comparison	Not reported	SEC filing

Offering details

Securities: Pooled investment fund, Other
Exemptions: 06b, 3C.7
Duration over one year: Yes
Business combination: No

Sales commissions: $6K (estimated)
Finders' fees: $0
Form D file number: 021-129176

The figure has been calculated from inception as of the filing date.

Limited Partnership Interests

Placement agent fee.

Sales compensation recipients

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Recipient	CRD	Associated broker-dealer
Mariner Group Capital Markets, Inc.	25878
NYLIFE Distributors, LLC	35350

Source: Form D, filed May 17, 2019. 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

MACKAY MUNICIPAL CREDIT OPPORTUNITIES MASTER FUND, L.P.

Investment adviser: MACKAY SHIELDS LLC

Gross asset value: $4.07B
Beneficial owners: 2,672
ADV minimum commitment: $1M

Reported in Form ADV on Aug 6, 2026. Fund assets and beneficial owners measure different things from Form D sales and investors.

Service providers

Fund administrator CITCO (CANADA) INC. TORONTO, Canada Investor statements: Some (provided to some but not all investors) Related to adviser: No

Fund administrator CITCO FUND SERVICES (CURACAO) B.V. WILLEMSTAD, Curacao Investor statements: Some (provided to some but not all investors) Related to adviser: No

Auditor PRICEWATERHOUSECOOPERS LLP NEW YORK, New York, United States

Custodian J.P. MORGAN SECURITIES LLC NEW YORK, New York, United States Related to adviser: No

Custodian PERSHING LLC JERSEY CITY, New Jersey, United States Related to adviser: No

Custodian TD SECURITIES (USA) LLC NEW YORK, New York, United States Related to adviser: No

Marketer J.P. MORGAN SECURITIES LLC NEW YORK, New York, United States Related to adviser: No

Marketer MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED NEW YORK, New York, United States Related to adviser: No

Marketer MORGAN STANLEY PURCHASE, New York, United States Related to adviser: No

Marketer NYLIFE DISTRIBUTORS LLC JERSEY CITY, New Jersey, United States Related to adviser: Yes

Marketer RBC CAPITAL MARKETS, LLC NEW YORK, New York, United States Related to adviser: No

Marketer ROCKEFELLER CAPITAL MANAGEMENT NEW YORK, New York, United States Related to adviser: No

Marketer UBS FINANCIAL SERVICES INC. WEEHAWKEN, New Jersey, United States Related to adviser: No

Prime broker J.P. MORGAN SECURITIES LLC NEW YORK, New York, United States

Prime broker PERSHING LLC JERSEY CITY, New Jersey, United States

Prime broker TD SECURITIES (USA) LLC NEW YORK, New York, United States

Provider details

Annual audit: Yes
Prime brokers: Yes
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: Yes

PRICEWATERHOUSECOOPERS LLP
PCAOB 238

J.P. MORGAN SECURITIES LLC
SEC 8-35008

PERSHING LLC
SEC 8-17574

TD SECURITIES (USA) LLC
SEC 8-36747

J.P. MORGAN SECURITIES LLC
CRD 79 · SEC 801-3702

MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED
CRD 7691 · SEC 801-14235

MORGAN STANLEY
CRD 149777 · SEC 801-70103

NYLIFE DISTRIBUTORS LLC
CRD 35350 · SEC 8-46655

RBC CAPITAL MARKETS, LLC
CRD 31194 · SEC 801-13059

ROCKEFELLER CAPITAL MANAGEMENT
CRD 291361 · SEC 801-114033

UBS FINANCIAL SERVICES INC.
CRD 8174 · SEC 801-7163

J.P. MORGAN SECURITIES LLC
CRD 79 · SEC 8-35008

PERSHING LLC
CRD 7560 · SEC 8-17574

TD SECURITIES (USA) LLC
CRD 18476 · SEC 8-36747

Filing source

Form ADV 2124546 · Aug 6, 2026 · Schedule D 7.B.(1), fund 805-6029565126

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
Name	Reported role
Robert A. Di Mella	Executive
John M. Loffredo	Executive
N/A Mackay Municipal Managers Credit Opportunities Gp Llc	Executive
N/A Mac Kay Municipal Managers Credit Opportunities Gp Llc	Executive
N/A Mac Kay Municipal Managers Credit Opportunities Gp, Llc	Executive
N/A Mac Kay Municipal Managers Credit Opportunities, Gp, Llc	Executive
N/A Mac Kay Municipal Managers Opportunities Gp Llc	Executive
N/A Mac Kay Shields Llc	Promoter
N/A Mac Kay Shields, Llc	Promoter
Mac Kay Shields Llc N/A	Promoter
Mac Kay Municipal Managers Credit Opportunities, Gp Llc N/A	Executive
Brain D. Stewart	Executive

Issuer details

Industry: Pooled Investment Fund (See others in industry)

Address:

1345 Avenue Of The Americas 43rd Floor
New York, NY, 10105