Phillip P. Chan - Aug 8, 2025 Form 4 Insider Report for Cytosorbents Corp (CTSO)

Role: Chief Executive Officer, Director
Signature: /s/ Peter J. Mariani attorney-in-fact Phillip P. Chan
Stock symbol: CTSO
Transactions as of: Aug 8, 2025
Transactions value $: $0
Form type: 4
Date filed: 8/8/2025, 07:40 PM
Previous filing: Feb 26, 2025
Next filing: Nov 20, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Chan Phillip P.	Chief Executive Officer, Director	C/O CYTOSORBENTS CORPORATION, 305 COLLEGE ROAD EAST, PRINCETON	/s/ Peter J. Mariani attorney-in-fact Phillip P. Chan	2025-08-08	0001442786

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CTSO	Common Stock	Award	$0	+106K	+8.27%	$0.00	1.38M	Aug 8, 2025	Direct	F1, F2, F3, F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	CTSO	Stock Option (Right to Buy)	Award	$0	+136K		$0.00	136K	Aug 8, 2025	Common Stock	136K	$1.00	Direct	F5

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

Explanation of Responses:

Id	Content
F1	These shares represent restricted stock units ("RSUs") which shall vest in equal parts at the first and second year anniversaries of the date of grant, subject to the reporting person's continued service as of the applicable vesting date.
F2	Includes: (i) the following RSUs that will be settled into shares of Common Stock upon vesting upon a "Change In Control" of the Company as defined in the Amended and Restated CytoSorbents Corporation 2014 Long-Term Incentive Plan (the "Plan"): (a) 10,300 RSUs granted on March 15, 2018, (b) 18,700 RSUs granted on February 24, 2017, (c) 57,000 RSUs granted on June 7, 2016 and (d) 130,000 RSUs granted on April 8, 2015;
F3	(continued from footnote 2) (iii) the following RSUs, which vest in equal parts on the first year anniversary of the date of grant and the second year anniversary of the date of grant, subject to the Reporting Person's continued service as of the applicable vesting date, and will settle into shares of Common Stock of the Company upon vesting: 96,000 RSUs granted on April 2, 2024 and of which 48,000 remain unvested as of the date hereof; and
F4	(continued from footnote 3) (iv) 1,013,363 shares of Common Stock owned by the Reporting Person.
F5	These stock options were granted pursuant to the Plan. The shares underlying these stock options vest as to one-half of the award on the first year anniversary of the date of grant, one-fourth of the award on the second year anniversary of the date of grant, and one-fourth of the award on the third year anniversary of the date of grant, subject to the reporting person's continued service as of the applicable vesting date.

Remarks:

Exhibit 24.1 Power of Attorney