Sk Inc. - Jul 15, 2025 Form 4 Insider Report for NET Power Inc. (NPWR)

Role: 10%+ Owner
Signature: /s/ Munhyuk Jang, Head of Corporate Management Department of SK Inc.
Stock symbol: NPWR
Transactions as of: Jul 15, 2025
Transactions value $: -$6,525,000
Form type: 4
Date filed: 7/17/2025, 06:34 AM
Previous filing: Dec 19, 2024
Next filing: Jul 31, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
SK INC.	10%+ Owner	26, JONG-RO, JONGNO-GU, SEOUL, KOREA, REPUBLIC OF	/s/ Munhyuk Jang, Head of Corporate Management Department of SK Inc.	2025-07-16	0001947998

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	NPWR	Class A Common Stock	Sale	-$6.53M	-2.5M	-100%	$2.61	0	Jul 15, 2025	By: Tillandsia	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On July 15, 2025, Tillandsia, Inc. ("Tillandsia") sold 2,500,000 shares of Class A Common Stock pursuant to a block trade through its placement manager, Citigroup Global Markets Inc., at a price of $2.61 per share.
F2	As holder of 100.0% of the outstanding equity in Tillandsia, SK Inc. ("SK") may be deemed to be a beneficial owner of the securities directly owned by Tillandsia. SK disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that SK is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Content

On July 15, 2025, Tillandsia, Inc. ("Tillandsia") sold 2,500,000 shares of Class A Common Stock pursuant to a block trade through its placement manager, Citigroup Global Markets Inc., at a price of $2.61 per share.

As holder of 100.0% of the outstanding equity in Tillandsia, SK Inc. ("SK") may be deemed to be a beneficial owner of the securities directly owned by Tillandsia. SK disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that SK is the beneficial owner of such securities for purposes of Section 16 or otherwise.