[Form 3] PIMCO CORPORATE & INCOME OPPORTUNITY FUND Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

Sonya Morris, listed at C/O PIMCO, 650 Newport Center Drive, Newport Beach, CA 92660, filed an initial Form 3 disclosing her relationship to PIMCO CORPORATE & INCOME OPPORTUNITY FUND (Ticker: PTY). The filing, reporting an event date of 09/18/2025, indicates Ms. Morris is a Director and that the Form was filed by one reporting person. The submission explicitly states no securities are beneficially owned. The form is signed on behalf of Ms. Morris by Ryan Leshaw, Attorney-in-Fact, dated 09/25/2025, and includes an Exhibit 24 Power of Attorney.

Insights

Financial Analyst

TL;DR: Initial disclosure shows a director with no beneficial ownership; minimal direct financial impact.

The Form 3 notifies investors that Sonya Morris, identified as a director of the issuer PTY, has filed an initial Section 16 statement and reports no beneficial ownership of the issuer's securities. From a financial perspective this is a routine compliance filing that provides transparency about insider holdings; it does not present revenue, earnings, or balance-sheet information and therefore carries no immediate valuation implications.

Corporate Governance Expert

TL;DR: Governance disclosure completed; absence of holdings is notable for transparency but not materially significant.

The filing documents that Ms. Morris serves as a director and that an initial Form 3 was submitted for the event dated 09/18/2025. The explicit statement that no securities are beneficially owned clarifies insider exposure (or lack thereof) and reduces ambiguity about potential conflicts. Inclusion of Exhibit 24 (Power of Attorney) and a signed filing by an attorney-in-fact indicate proper procedural steps were followed. This is governance housekeeping rather than a material corporate development.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Morris Sonya

(Last) (First) (Middle)

C/O PIMCO

650 NEWPORT CENTER DRIVE

(Street)

NEWPORT BEACH CA 92660

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
09/18/2025

3. Issuer Name and Ticker or Trading Symbol
PIMCO CORPORATE & INCOME OPPORTUNITY FUND [ PTY ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Exhibit List: Exhibit 24 - Power of Attorney No Securities are beneficially owned.

No securities are beneficially owned.

	/s/ Ryan Leshaw, Attorney-in-Fact for Sonya Morris	09/25/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Sonya Morris disclose on the Form 3 for PTY?

The filing states that Sonya Morris is a Director of PIMCO CORPORATE & INCOME OPPORTUNITY FUND (PTY) and that no securities are beneficially owned.

When is the event date reported on the Form 3 for PTY?

The Form 3 reports the event date as 09/18/2025.

Who signed the Form 3 filing for Sonya Morris?

The form is signed by Ryan Leshaw, Attorney-in-Fact for Sonya Morris, dated 09/25/2025.

Does the Form 3 for PTY show any securities owned by the reporting person?

No. The filing explicitly states no securities are beneficially owned by the reporting person.

Was a Power of Attorney included with the Form 3 filing?

Yes. The filing lists Exhibit 24 - Power of Attorney.