Cerus (NASDAQ: CERS) COO executes 10b5-1 sale of 16,667 shares at $3

Filing Impact

(Neutral)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

CERUS CORP Chief Operating Officer Vivek K. Jayaraman sold shares in an open-market transaction. On May 29, 2026, he sold 16,667 shares of Cerus common stock at $3.00 per share in a sale reported as an open-market transaction.

The filing states that this transaction was executed pursuant to a Rule 10b5-1 trading plan, meaning it was pre-arranged rather than timed discretionarily. Following the sale, Jayaraman directly owned 1,656,707 shares of Cerus common stock.

Insider Trade Summary 10b5-1

Net Seller: 16,667 shares ($50,001)

Net Sell 1 txn

Insider Jayaraman Vivek K

Role Chief Operating Officer

Sold 16,667 shs ($50K)

Type	Security	Shares	Price	Value
Sale	Common Stock	16,667	$3.00	$50K

Holdings After Transaction: Common Stock — 1,656,707 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares sold: 16,667 shares Sale price: $3.00 per share Shares owned after sale: 1,656,707 shares +1 more

4 metrics

Shares sold 16,667 shares Open-market sale on May 29, 2026

Sale price $3.00 per share Price for the 16,667 shares sold

Shares owned after sale 1,656,707 shares Direct ownership following the transaction

Net buy/sell shares -16,667 shares Net selling in this Form 4

Key Terms

Rule 10b5-1 trading plan, open-market sale, Common Stock, Form 4

4 terms

Rule 10b5-1 trading plan regulatory

"This transaction was executed pursuant to a 10b5-1 plan."

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

open-market sale financial

"transaction_action: "open-market sale" for 16,667 shares at $3.0000"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

"security_title: "Common Stock" in the non-derivative transaction"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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Form 4 Insider Transactions: What Each Field Means →

06/02/2026 - 07:46 PM

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^*

Jayaraman Vivek K

(Last)

(First)

(Middle)

C/O CERUS CORPORATION

1220 CONCORD AVE SUITE 600

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/29/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/29/2026		S		16,667⁽¹⁾	D	$3	1,656,707	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. This transaction was executed pursuant to a 10b5-1 plan.

	Vivek K. Jayaraman, 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did CERUS CORP (CERS) report for Vivek K. Jayaraman?

CERUS CORP reported that COO Vivek K. Jayaraman sold 16,667 shares of common stock. The transaction occurred on May 29, 2026, and was reported as an open-market sale at $3.00 per share under a pre-arranged Rule 10b5-1 trading plan.

At what price did CERUS CORP (CERS) COO sell his shares?

The COO of CERUS CORP sold his shares at $3.00 per share. The Form 4 shows 16,667 common shares sold in an open-market transaction on May 29, 2026, executed under a Rule 10b5-1 trading plan.

How many CERUS CORP (CERS) shares does Vivek K. Jayaraman hold after this sale?

After the reported sale, Vivek K. Jayaraman directly holds 1,656,707 shares of CERUS CORP common stock. This figure reflects his remaining direct ownership position as disclosed in the Form 4 following the 16,667-share open-market sale.

Was the CERUS CORP (CERS) insider sale made under a Rule 10b5-1 plan?

Yes, the insider sale was executed pursuant to a Rule 10b5-1 trading plan. The Form 4 footnote states that the 16,667-share open-market sale on May 29, 2026, followed a pre-arranged plan rather than discretionary market timing.

What role does Vivek K. Jayaraman hold at CERUS CORP (CERS)?

Vivek K. Jayaraman serves as Chief Operating Officer at CERUS CORP. The Form 4 identifies him as an officer of the company and reports his open-market sale of 16,667 common shares at $3.00 per share on May 29, 2026.

What is the direction of the recent CERUS CORP (CERS) insider transaction?

The recent insider transaction at CERUS CORP is a sale. The Form 4 shows COO Vivek K. Jayaraman conducted an open-market sale of 16,667 common shares at $3.00 per share, leaving him with 1,656,707 shares directly owned afterward.