Cerus Corp (CERS) director sells 20,454 common shares in open-market trade

Rhea-AI Filing Summary

Cerus Corp director Eric Bjerkholt sold shares in an open-market transaction. On this trade, he sold 20,454 shares of Cerus common stock at a price of $2.60 per share. After the sale, he directly owned 261,679 shares of the company’s common stock.

Insider Trade Summary

Net Seller: 20,454 shares ($53,180)

Net Sell 1 txn

Insider BJERKHOLT ERIC

Role null

Sold 20,454 shs ($53K)

Type	Security	Shares	Price	Value
Sale	Common Stock	20,454	$2.60	$53K

Holdings After Transaction: Common Stock — 261,679 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold: 20,454 shares Sale price per share: $2.60 per share Shares owned after sale: 261,679 shares +1 more

4 metrics

Shares sold 20,454 shares Open-market sale of Cerus common stock

Sale price per share $2.60 per share Price for the 20,454 Cerus shares sold

Shares owned after sale 261,679 shares Direct holdings following the transaction

Net share change -20,454 shares Net-sell direction from transaction summary

Key Terms

Common Stock, open-market sale, net-sell, beneficial ownership

4 terms

Common Stock financial

"Security title reported as Common Stock in the Form 4 data"

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.

open-market sale financial

"Transaction action described as open-market sale in the filing"

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.

net-sell financial

"Transaction summary shows a net-sell direction for shares"

beneficial ownership regulatory

"Form 4 structure relates to insider beneficial ownership reporting"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

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Form 4 Insider Transactions: What Each Field Means →

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^*

BJERKHOLT ERIC

(Last) (First) (Middle)

C/O CERUS CORP

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)
06/09/2026

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	06/09/2026		S		20,454	D	$2.6	261,679	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:

	Eric Bjerkholt by Chrystal N. Jensen - attoney-in-fact	06/11/2026
	** 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)

FAQ

What insider transaction did Cerus Corp (CERS) director Eric Bjerkholt report?

Eric Bjerkholt reported an open-market sale of Cerus Corp common stock. He sold 20,454 shares in a single transaction, as disclosed in the Form 4 insider filing for Cerus Corp.

How many Cerus Corp (CERS) shares did Eric Bjerkholt sell and at what price?

Eric Bjerkholt sold 20,454 shares of Cerus Corp common stock. The reported sale price was $2.60 per share, indicating an open-market transaction at that per-share price level.

How many Cerus Corp (CERS) shares does Eric Bjerkholt hold after this Form 4 sale?

Following the reported sale, Eric Bjerkholt directly owns 261,679 Cerus Corp common shares. This post-transaction holding reflects his remaining direct ownership after disposing of 20,454 shares in the open market.

Was the Cerus Corp (CERS) insider transaction a purchase or a sale?

The Form 4 filing shows a sale by the insider. The transaction code is “S” and it is described as an open-market or private sale of 20,454 shares of Cerus common stock at $2.60 per share.

What type of security did Cerus Corp (CERS) director Eric Bjerkholt trade?

The reported transaction involved Cerus Corp common stock. The Form 4 indicates a non-derivative security titled “Common Stock,” confirming that the trade related to ordinary equity shares rather than options or other derivatives.