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Ceribell (CBLL) CTO Woo exercises stock options, sells 11,112 shares

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

Rhea-AI Filing Summary

Ceribell, Inc. Chief Technology Officer Raymond Woo reported a set of option exercises and related share sales in Ceribell stock. On March 2, 2026, he exercised multiple stock options to acquire common shares and then sold 11,112 shares of common stock in open-market transactions under a pre-arranged Rule 10b5-1 trading plan adopted on May 28, 2025. The reported sale prices were based on weighted-average prices within ranges from $18.10 to $18.41 per share. After these transactions, Woo directly held 166,912 shares of Ceribell common stock.

Positive

  • None.

Negative

  • None.
Insider Woo Raymond
Role Chief Technology Officer
Sold 11,112 shs ($203K)
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
Sale Common Stock 1,472 $18.26 $27K
Exercise Common Stock 3,025 $4.70 $14K
Sale Common Stock 3,025 $18.26 $55K
Exercise Common Stock 6,615 $4.70 $31K
Sale Common Stock 6,615 $18.25 $121K
Holdings After Transaction: Stock Option (Right to Buy) — 11,330 shares (Direct); Common Stock — 168,384 shares (Direct)
Footnotes (1)
  1. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 28, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.10 to $18.41, 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)
03/02/2026
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 03/02/2026 M(1) 1,472 A $2.24 168,384 D
Common Stock 03/02/2026 S(1) 1,472 D $18.26(2) 166,912 D
Common Stock 03/02/2026 M(1) 3,025 A $4.7 169,937 D
Common Stock 03/02/2026 S(1) 3,025 A $18.26(2) 166,912 D
Common Stock 03/02/2026 M(1) 6,615 A $4.7 173,527 D
Common Stock 03/02/2026 S(1) 6,615 D $18.25(2) 166,912 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 03/02/2026 M(1) 1,472 (3) 06/10/2029 Common Stock 1,472 $0 11,330 D
Stock Option (Right to Buy) $4.7 03/02/2026 M(1) 3,025 (4) 02/16/2033 Common Stock 3,025 $0 38,746 D
Stock Option (Right to Buy) $4.7 03/02/2026 M(1) 6,615 (5) 02/16/2033 Common Stock 6,615 $0 32,293 D
Explanation of Responses:
1. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 28, 2025.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.10 to $18.41, 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 03/04/2026
** 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.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transactions did Ceribell (CBLL) CTO Raymond Woo report?

Raymond Woo reported option exercises and related stock sales. On March 2, 2026, he exercised multiple stock options and sold 11,112 Ceribell common shares in open-market transactions executed under a pre-established Rule 10b5-1 trading plan.

How many Ceribell (CBLL) shares did the CTO sell in this Form 4?

The CTO sold 11,112 shares of Ceribell common stock. These shares were sold in three open-market transactions following option exercises, with pricing disclosed as weighted averages across multiple trades within a specified intraday price range.

At what prices were the Ceribell (CBLL) shares sold by the CTO?

The filing reports weighted-average sale prices, with trades executed between $18.10 and $18.41 per share. Individual line items show prices such as $18.25 and $18.26, reflecting multiple executions within that disclosed price range.

Did Ceribell (CBLL) CTO Raymond Woo use a Rule 10b5-1 plan?

Yes. The transactions were effected under a Rule 10b5-1 trading plan adopted on May 28, 2025. Such plans allow insiders to pre-schedule trades, helping separate personal trading decisions from later material nonpublic information.

How many Ceribell (CBLL) shares does the CTO hold after these trades?

Following the reported exercises and sales, Raymond Woo directly owns 166,912 shares of Ceribell common stock. This post-transaction holding reflects his remaining direct equity stake after the 11,112 shares were sold in the reported transactions.

What type of derivatives did the Ceribell (CBLL) CTO exercise?

He exercised stock options described as a “Stock Option (Right to Buy).” Several option tranches were exercised on March 2, 2026, converting into Ceribell common stock before a portion of those shares was sold in the open market.