Cerus (CERS) director Jami Nachtsheim awarded 60,000 RSUs, lifting holdings to 268,362 shares

Rhea-AI Filing Summary

NACHTSHEIM JAMI K reported acquisition or exercise transactions in this Form 4 filing.

CERUS CORP director Jami K. Nachtsheim received an equity grant of 60,000 restricted stock units (RSUs). These RSUs were awarded at no cash cost per unit and increase her direct holdings to 268,362 shares of common stock.

Each RSU represents a contingent right to receive one share of Cerus common stock. The RSUs vest on the earlier of the first anniversary of the grant date or the day before the next annual stockholder meeting, as long as she continues serving the company through that vesting date.

Insights

Equity compensation analyst

Director received 60,000 RSUs as routine equity compensation.

The filing shows Jami K. Nachtsheim, a director of CERUS CORP, received 60,000 RSUs at a grant price of $0.0000 per unit under the 2024 Equity Incentive Plan. This is a non-cash, equity-based compensation award, not an open-market purchase.

The RSUs vest on the earlier of the first anniversary of the grant date or the day before the next annual stockholder meeting, contingent on continued service. After this grant, she directly holds 268,362 shares, indicating the award is additive to an existing position. This type of director compensation is typically considered routine and administrative.

Insider Trade Summary

Net Buyer: 60,000 shares

Net Buy 1 txn

Insider NACHTSHEIM JAMI K

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	60,000	$0.00	$0.00

Holdings After Transaction: Common Stock — 268,362 shares (Direct)

Footnotes (1)

1. F1. Represents RSUs granted pursuant to the Issuer's 2024 Equity Incentive Plan. Each RSU represents a contingent right to receive one share of common stock of the Issuer. The RSUs vest on the earlier of the first anniversary of the date of grant or the day prior to the next annual meeting of stockholders, subject to the Reporting Person's continuous service to the Issuer through such vesting date.

Key Figures

RSUs granted: 60,000 units Grant price per RSU: $0.0000 per unit Shares held after grant: 268,362 shares +1 more

4 metrics

RSUs granted 60,000 units Restricted stock units awarded to director

Grant price per RSU $0.0000 per unit Equity compensation, non-cash award

Shares held after grant 268,362 shares Director’s direct holdings following transaction

Vesting trigger Earlier of 1-year anniversary or pre-next annual meeting Vesting condition for RSUs, requires continuous service

Key Terms

RSUs, 2024 Equity Incentive Plan, contingent right, vest, +1 more

5 terms

RSUs financial

"Represents RSUs granted pursuant to the Issuer's 2024 Equity Incentive Plan."

RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.

2024 Equity Incentive Plan financial

"Represents RSUs granted pursuant to the Issuer's 2024 Equity Incentive Plan."

contingent right financial

"Each RSU represents a contingent right to receive one share of common stock"

vest financial

"The RSUs vest on the earlier of the first anniversary of the date of grant"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

continuous service financial

"subject to the Reporting Person's continuous service to the Issuer"

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

What did Cerus Corp (CERS) director Jami K. Nachtsheim receive in this Form 4?

Director Jami K. Nachtsheim received a grant of 60,000 restricted stock units (RSUs). Each RSU represents a contingent right to one share of Cerus common stock, awarded as equity compensation rather than through an open-market stock purchase.

How many Cerus (CERS) shares does Jami K. Nachtsheim hold after this RSU grant?

After the 60,000 RSU grant, Jami K. Nachtsheim directly holds 268,362 shares of Cerus common stock. This figure reflects her ownership position following the award as reported in the Form 4 insider transaction filing.

At what price were the 60,000 Cerus (CERS) RSUs granted to the director?

The 60,000 RSUs were granted at a stated price of $0.0000 per unit. This indicates a non-cash equity award made under Cerus’s 2024 Equity Incentive Plan, rather than a purchase of shares in the open market at a trading price.

When do the new Cerus (CERS) RSUs granted to Jami K. Nachtsheim vest?

The RSUs vest on the earlier of the first anniversary of the grant date or the day before the next annual stockholder meeting. Vesting is conditioned on Nachtsheim’s continuous service to Cerus through the applicable vesting date specified in the award terms.

What plan governs the RSU grant reported in this Cerus (CERS) Form 4?

The RSUs were granted under Cerus’s 2024 Equity Incentive Plan. This plan authorizes equity-based compensation awards such as restricted stock units, which give directors and other participants contingent rights to receive company common shares upon vesting.

Is the Cerus (CERS) Form 4 transaction a stock purchase or compensation grant?

The transaction is a compensation grant, not a market purchase. The Form 4 shows a grant of 60,000 RSUs at $0.0000 per unit, classified as a grant or award acquisition rather than an open-market buy or sell of existing Cerus shares.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

NACHTSHEIM JAMI K

(Last) (First) (Middle)

C/O CERUS CORPORATION

1220 CONCORD AVE

(Street)

CONCORD CALIFORNIA 94520

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CERUS CORP [ CERS ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/02/2026

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

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

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

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	06/02/2026		A		60,000(1)	A	$0	268,362	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents RSUs granted pursuant to the Issuer's 2024 Equity Incentive Plan. Each RSU represents a contingent right to receive one share of common stock of the Issuer. The RSUs vest on the earlier of the first anniversary of the date of grant or the day prior to the next annual meeting of stockholders, subject to the Reporting Person's continuous service to the Issuer through such vesting date.

	Jami Nachtsheim by Chrystal N. Jensen, attorney-in-fact	06/02/2026
	** 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 4 (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.
* Form 4: SEC 1474 (03-26)