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  4. [Form 4] Ceribell, Inc. Insider Trading Activity

CBLL CTO Woo reports option exercises and 11,112-share sale

Filing Impact
(Moderate)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Ceribell (CBLL) reported insider activity by its Chief Technology Officer, Raymond Woo. On 11/11/2025, he exercised options for 1,472 shares at $2.24, and 3,025 and 6,615 shares at $4.70, then sold 11,112 shares under a Rule 10b5-1 trading plan. The sale’s weighted-average price was $12.28, with trades ranging from $12.00 to $12.52. Following these transactions, his directly held common stock was 167,704 shares. Related options remain outstanding with expirations through 2033 as disclosed.

Positive

  • None.

Negative

  • None.
Insider Woo Raymond
Role Chief Technology Officer
Sold 11,112 shs ($136K)
Type Security Shares Price Value
Exercise Stock Option (Right to Buy) 1,472 $0.00 --
Exercise Stock Option (Right to Buy) 3,025 $0.00 --
Exercise Stock Option (Right to Buy) 6,615 $0.00 --
Exercise Common Stock 1,472 $2.24 $3K
Exercise Common Stock 3,025 $4.70 $14K
Exercise Common Stock 6,615 $4.70 $31K
Sale Common Stock 11,112 $12.28 $136K
Holdings After Transaction: Stock Option (Right to Buy) — 17,218 shares (Direct); Common Stock — 169,176 shares (Direct)
Footnotes (1)
  1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12 to $12.52, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased or sold, as applicable, at each separate price within the ranges set forth in this footnote. The stock option is fully vested and currently exercisable. The option vests with respect to 1/48 of the shares subject thereto on each monthly anniversary of April 1, 2023, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date. The option vests with respect to 1/24 of the shares subject thereto on each monthly anniversary of April 1, 2023, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date.
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).
X
 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*
Woo Raymond
(Last) (First) (Middle)
C/O CERIBELL, INC.
360 N. PASTORIA AVENUE
(Street)
SUNNYVALE CA 94085
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Ceribell, Inc. [ CBLL ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Chief Technology Officer
3. Date of Earliest Transaction (Month/Day/Year)
11/11/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
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 11/11/2025 M(1) 1,472 A $2.24 169,176 D
Common Stock 11/11/2025 M(1) 3,025 A $4.7 172,201 D
Common Stock 11/11/2025 M(1) 6,615 A $4.7 178,816 D
Common Stock 11/11/2025 S(1) 11,112 D $12.28(2) 167,704 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
Stock Option (Right to Buy) $2.24 11/11/2025 M(1) 1,472 (3) 06/10/2029 Common Stock 1,472 $0 17,218 D
Stock Option (Right to Buy) $4.7 11/11/2025 M(1) 3,025 (4) 02/16/2033 Common Stock 3,025 $0 50,846 D
Stock Option (Right to Buy) $4.7 11/11/2025 M(1) 6,615 (5) 02/16/2033 Common Stock 6,615 $0 58,753 D
Explanation of Responses:
1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12 to $12.52, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased or sold, as applicable, at each separate price within the ranges set forth in this footnote.
3. The stock option is fully vested and currently exercisable.
4. The option vests with respect to 1/48 of the shares subject thereto on each monthly anniversary of April 1, 2023, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date.
5. The option vests with respect to 1/24 of the shares subject thereto on each monthly anniversary of April 1, 2023, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date.
/s/ Louisa Daniels, Attorney-in-Fact for Raymond Woo 11/13/2025
** 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.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did CBLL disclose on Form 4?

The CTO, Raymond Woo, exercised options and sold 11,112 shares on 11/11/2025 under a Rule 10b5-1 trading plan.

How many Ceribell (CBLL) shares were sold and at what price?

11,112 shares were sold at a weighted-average price of $12.28, with individual trades between $12.00 and $12.52.

What options did the CBLL CTO exercise?

Options for 1,472 shares at $2.24 and for 3,025 and 6,615 shares at $4.70 were exercised on 11/11/2025.

How many CBLL shares does the CTO hold after the transactions?

Directly held common stock was 167,704 shares following the reported transactions.

Was the CBLL share sale under a 10b5-1 plan?

Yes. The filing states the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

Do any options remain outstanding for the CBLL CTO?

Yes. The filing shows outstanding stock options with expirations including 06/10/2029 and 02/16/2033.