Form 3: MassMutual Reports Direct Ownership of 1,000,000 TYG Preferred Shares

Rhea-AI Filing Summary

Massachusetts Mutual Life Insurance Co. filed an initial Form 3 disclosing a direct beneficial ownership position in Tortoise Energy Infrastructure Corp. (TYG). The filing records a date of event of 08/21/2025 and reports 1,000,000 Series J mandatory redeemable preferred shares owned directly. The reporting relationship is indicated as Director. The form is signed by Philip Wellman on 09/08/2025.

Positive

• Initial disclosure filed establishing a clear baseline ownership of 1,000,000 Series J preferred shares
• Reporting relationship identified as Director, aiding governance transparency
• Form is signed and dated (Philip Wellman, 09/08/2025), meeting signature requirements

Negative

• None.

Insights

Securities Compliance Analyst

TL;DR: Initial Section 16 disclosure of 1,000,000 Series J preferred shares by MassMutual as Director.

The Form 3 is a routine Section 16 filing that establishes the reporting person’s initial ownership in TYG. It documents a direct position in 1,000,000 Series J mandatory redeemable preferred shares and identifies the filer as a Director. This filing creates the baseline for future Form 4/Form 5 disclosures and helps ensure Section 16 monitoring and insider transaction transparency.

Corporate Governance Specialist

TL;DR: Governance disclosure is complete for an initial ownership statement; no derivatives or additional arrangements reported.

The submission contains the core elements expected in an initial beneficial ownership statement: reporting person identity, event date, security class and amount, and signature. No derivative securities, indirect holdings, or amendments are reported, which simplifies oversight but also means follow-up filings should be watched if transactions occur.

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^*

MASSACHUSETTS MUTUAL LIFE INSURANCE CO

(Last) (First) (Middle)

1295 STATE STREET

(Street)

SPRINGFIELD MA 01111

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
08/21/2025

3. Issuer Name and Ticker or Trading Symbol
TORTOISE ENERGY INFRASTRUCTURE CORP [ TYG ]

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

	Director	X	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)
Series J Mandatory Redeemable Preferred Shares	1,000,000	D

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:

	/s/ Philip Wellman	09/08/2025
	** 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 the Form 3 filed for TYG disclose?

The Form 3 discloses that Massachusetts Mutual Life Insurance Co. directly owns 1,000,000 Series J mandatory redeemable preferred shares of Tortoise Energy Infrastructure Corp.

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

The form lists the date of event as 08/21/2025 and the signature date is 09/08/2025.

What is the relationship of the reporting person to TYG?

The filing indicates the reporting person’s relationship as Director to the issuer.

Are any derivative securities or indirect holdings reported?

No. The filing shows no derivative securities and reports the position as a direct (D) ownership.

Who signed the Form 3 for this filing?

The Form 3 is signed by Philip Wellman and dated 09/08/2025.