Sumant Sinha boosts RNW disclosure with 19.35% stake and new proposal

Rhea-AI Filing Summary

Sumant Sinha and affiliated entities filed Amendment No. 8 to a Schedule 13D for ReNew Energy Global plc, updating their beneficial ownership of Class A ordinary shares. Sinha reports beneficial ownership of 58,996,705 shares, representing 19.35% of the class. Cognisa Investment reports 6,498,328 shares, or 2.64%, and Wisemore Advisory Private Limited reports 4,939,313 shares, or 2%. The amendment also adds Exhibit 99.16, a Revised Proposal dated May 28, 2026 from Canada Pension Plan Investment Board and Sumant Sinha.

Key Figures

Sumant Sinha beneficial ownership: 58,996,705 shares Sumant Sinha sole voting power: 47,558,982 shares Sumant Sinha shared voting power: 11,437,641 shares +5 more

8 metrics

Sumant Sinha beneficial ownership 58,996,705 shares Represents 19.35% of Class A ordinary shares

Sumant Sinha sole voting power 47,558,982 shares Sole voting power over Class A ordinary shares

Sumant Sinha shared voting power 11,437,641 shares Shared voting power over Class A ordinary shares

Cognisa Investment beneficial ownership 6,498,328 shares Represents 2.64% of Class A ordinary shares

Wisemore Advisory beneficial ownership 4,939,313 shares Represents 2% of Class A ordinary shares

Amendment number Amendment No. 8 Latest amendment to Schedule 13D

Event date May 29, 2026 Date of event requiring the amendment

Exhibit date May 28, 2026 Date of Revised Proposal in Exhibit 99.16

Key Terms

beneficially owned, Sole Voting Power, Shared Voting Power, Schedule 13D, +2 more

6 terms

beneficially owned financial

"11Aggregate amount beneficially owned by each reporting person 58,996,705.00"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole Voting Power financial

"Number of Shares Beneficially Owned by Each Reporting Person With: | 7 | Sole Voting Power 47,558,982.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

Shared Voting Power financial

"8 | Shared Voting Power 11,437,641.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

Schedule 13D regulatory

"pursuant to 240.13d-2(a), to amend and supplement the filed with the U.S. Securities and Exchange Commission"

A Schedule 13D is a legal document that investors file with regulators when they buy a large enough stake in a company to potentially influence its management or decisions. It provides details about the investor’s intention, ownership stake, and plans, helping other investors understand who is gaining control and what their motives might be.

Revised Proposal financial

"Exhibit 99.16 Revised Proposal, dated May 28, 2026, from Canada Pension Plan Investment Board and Sumant Sinha."

percent of class financial

"13Percent of class represented by amount in Row (11) 19.35 %"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 8)

ReNew Energy Global plc

(Name of Issuer)

Class A ordinary shares, par value $0.0001 per share

(Title of Class of Securities)

G7500M104

(CUSIP Number)

Sumant Sinha
Commercial Block-1, Zone 6, Golf Course, DLF City Phase-V
Gurugram, K7, 122009
(91) 124 489 6670

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

05/29/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

schemaVersion:

SCHEDULE 13D

CUSIP Number(s): G7500M104

1

Name of reporting person

Sinha Sumant

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

INDIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 47,558,982.00
8	Shared Voting Power 11,437,641.00
9	Sole Dispositive Power 47,558,982.00
10	Shared Dispositive Power 11,437,641.00

11

Aggregate amount beneficially owned by each reporting person

58,996,705.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

19.35 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

CUSIP Number(s): G7500M104

1

Name of reporting person

Cognisa Investment

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

INDIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 6,498,328.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 6,498,328.00

11

Aggregate amount beneficially owned by each reporting person

6,498,328.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

2.64 %

14

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13D

CUSIP Number(s): G7500M104

1

Name of reporting person

Wisemore Advisory Private Limited

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

INDIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 4,939,313.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 4,939,313.00

11

Aggregate amount beneficially owned by each reporting person

4,939,313.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

2 %

14

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Class A ordinary shares, par value $0.0001 per share
(b)	Name of Issuer: ReNew Energy Global plc
(c)	Address of Issuer's Principal Executive Offices: C/O Vistra (UK) Ltd Suite 3, 7th Floor, 50 Broadway, London, UNITED KINGDOM , SW1H 0DB.
Item 1 Comment: This Amendment No. 8 (the "Amendment No.8") is being filed by the undersigned, pursuant to 240.13d-2(a), to amend and supplement the Schedule 13D filed with the U.S. Securities and Exchange Commission (the "SEC") by the Reporting Persons on September 2, 2021, as amended and supplemented on November 21, 2022, November 30, 2023, December 10, 2024, July 2, 2025, October 10, 2025, December 15, 2025 and May 28, 2025 (the "Original Schedule 13D") and as further amended and supplemented by this Amendment No. 8 to the Original Schedule 13D (collectively, the "Schedule 13D"). Except as specifically provided herein, this Amendment No. 8 does not modify any of the information previously reported on the Original Schedule 13D. Capitalized terms not otherwise defined in this Amendment No. 8 shall have the same meanings ascribed thereto in the Original Schedule 13D.
Item 7.	Material to be Filed as Exhibits.
	This Amendment amends and supplements Item 7 of the Original Schedule 13D by adding the following: Exhibit 99.16 Revised Proposal, dated May 28, 2026, from Canada Pension Plan Investment Board and Sumant Sinha.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Sinha Sumant

Signature:	/s/ Sumant Sinha
Name/Title:	Sumant Sinha, in person capacity
Date:	05/29/2026

Cognisa Investment

Signature:	/s/ Sumant Sinha
Name/Title:	Sumant Sinha, Partner
Date:	05/29/2026

Wisemore Advisory Private Limited

Signature:	/s/ Sumant Sinha
Name/Title:	Sumant Sinha, Director
Date:	05/29/2026

FAQ

What does the latest Schedule 13D/A for RNW disclose about ownership?

The amendment shows Sumant Sinha beneficially owns 58,996,705 ReNew Energy Global shares, equal to 19.35% of the Class A ordinary shares. Affiliates Cognisa Investment and Wisemore Advisory Private Limited report additional holdings of 6,498,328 and 4,939,313 shares, respectively.

How large is Sumant Sinha’s stake in ReNew Energy Global (RNW)?

Sumant Sinha reports beneficial ownership of 58,996,705 Class A ordinary shares, representing 19.35% of ReNew Energy Global’s outstanding class. This figure includes shares over which he has sole or shared voting and dispositive power as detailed in the filing tables.

What are Cognisa Investment’s holdings in ReNew Energy Global (RNW)?

Cognisa Investment reports beneficial ownership of 6,498,328 Class A ordinary shares of ReNew Energy Global, equal to 2.64% of the class. All of these shares are listed as having shared voting and shared dispositive power, with no sole authority indicated.

How many RNW shares does Wisemore Advisory Private Limited beneficially own?

Wisemore Advisory Private Limited reports beneficial ownership of 4,939,313 Class A ordinary shares of ReNew Energy Global. This stake represents 2% of the class, all held with shared voting and shared dispositive power, and no sole authority shown in the tables.

What new exhibit is added in Amendment No. 8 for ReNew Energy Global (RNW)?

The amendment adds Exhibit 99.16, a Revised Proposal dated May 28, 2026, from Canada Pension Plan Investment Board and Sumant Sinha. This exhibit is listed under Item 7 as additional material to be filed, supplementing the original Schedule 13D.

Why was Amendment No. 8 to the Schedule 13D for RNW filed?

Amendment No. 8 was filed to amend and supplement the existing Schedule 13D previously filed and amended multiple times since 2021. It updates beneficial ownership information and adds Exhibit 99.16, a Revised Proposal from Canada Pension Plan Investment Board and Sumant Sinha.