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

Ceribell (CBLL) CEO sells 33,614 shares in 10b5-1 trades

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Ceribell, Inc. (CBLL) reported that President and CEO Chao Xingjuan sold a total of 33,614 shares of common stock in open-market transactions on August 18–19, 2026, at prices around $25 per share. The transactions were effected pursuant to a Rule 10b5-1 trading plan. Xingjuan also reported an indirect holding of 369,088 shares of common stock held by the ACP 2021 Trust, where she is a co-trustee and disclaims beneficial ownership except to the extent of her pecuniary interest. The August 19 sale price is disclosed as a weighted average with individual trade prices ranging from $25.00 to $25.30.

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Insights

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Insider Chao Xingjuan
Role President and CEO
Sold 33,614 shs ($841K)
Type Security Shares Price Value
Sale Common Stock F1, F4 31,415 $25.03 $786K
Sale Common Stock F1 2,199 $25.00 $55K
holding Common Stock F2, F3 -- -- --
Holdings After Transaction: Common Stock — 787,799 shares (Direct); Common Stock — 369,088 shares (Indirect, By ACP 2021 Trust)
Footnotes (4)
  1. F1. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.
  2. F2. The Reporting Person is a co-trustee of the ACP 2021 Trust, and therefore may be deemed to share beneficial ownership of these securities.
  3. F3. The Reporting Person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.
  4. F4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25 to $25.30, 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.
Shares sold August 19, 2026 31,415 shares of Common Stock Open-market sale at weighted average price reported on that date
Weighted average sale price August 19, 2026 $25.03 per share Shares sold in multiple transactions from $25.00 to $25.30
Shares sold August 18, 2026 2,199 shares of Common Stock Open-market sale on that date
Sale price August 18, 2026 $25.00 per share Price for 2,199-share sale
Total shares sold in reported transactions 33,614 shares of Common Stock Sum of open-market sales on August 18–19, 2026
Indirect holdings via ACP 2021 Trust 369,088 shares of Common Stock Reported as indirectly owned; beneficial ownership disclaimed except pecuniary interest
Rule 10b5-1 trading plan regulatory
"transactions were effected pursuant to a Rule 10b5-1 trading 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.
weighted average price financial
"The price reported in Column 4 is a weighted average price"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
beneficial ownership financial
"may be deemed to share beneficial ownership of these securities"
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.
pecuniary interest financial
"disclaims beneficial ownership of these securities except to the extent of her pecuniary interest"
indirect ownership financial
"reported an indirect holding of 369,088 shares held by the ACP 2021 Trust"

FAQ

What insider transactions did CBLL report for President and CEO Chao Xingjuan?
Ceribell reported that President and CEO Chao Xingjuan sold a total of 33,614 shares of common stock in open-market transactions on August 18–19, 2026, at prices around $25 per share, under a Rule 10b5-1 trading plan.

How many CBLL shares did Chao Xingjuan sell on August 19, 2026?
On August 19, 2026, Chao Xingjuan sold 31,415 shares of Ceribell common stock at a weighted average price of $25.03 per share, with individual sale prices ranging from $25.00 to $25.30.

How many CBLL shares did Chao Xingjuan sell on August 18, 2026?
On August 18, 2026, Chao Xingjuan sold 2,199 shares of Ceribell common stock at a price of $25.00 per share in an open-market transaction reported on the Form 4.

Were Chao Xingjuan’s CBLL stock sales made under a Rule 10b5-1 plan?
Yes. The Form 4 states that the reported transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person, and the filing’s Rule 10b5-1 checkbox is marked as affirmative.

What indirect CBLL shareholdings did Chao Xingjuan report?
Chao Xingjuan reported an indirect holding of 369,088 shares of Ceribell common stock held by the ACP 2021 Trust, where she is a co-trustee. She disclaims beneficial ownership of these securities except to the extent of her pecuniary interest.

What is the total number of CBLL shares sold in this Form 4?
Across the reported transactions, Chao Xingjuan sold a total of 33,614 shares of Ceribell common stock, consisting of 31,415 shares sold on August 19, 2026, and 2,199 shares sold on August 18, 2026.

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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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*
Chao Xingjuan
(Last)(First)(Middle)
C/O CERIBELL, INC.
360 N. PASTORIA AVENUE
(Street)
SUNNYVALE CALIFORNIA 94085
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
Ceribell, Inc. [ CBLL ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
President and CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/18/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock08/18/2026S(1)2,199D$25819,214D
Common Stock08/19/2026S(1)31,415D$25.03(4)787,799D
Common Stock369,088IBy ACP 2021 Trust(2)(3)
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
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.
2. The Reporting Person is a co-trustee of the ACP 2021 Trust, and therefore may be deemed to share beneficial ownership of these securities.
3. The Reporting Person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.
4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25 to $25.30, 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.
/s/ Louisa Daniels, Attorney-in-Fact for Xingjuan (Jane) Chao08/20/2026
** Signature of Reporting PersonDate
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