STOCK TITAN

Cerebras director reports 996K-share transfer

Cerebras Systems Inc. director Susan Lior reported non-cash restructuring transfers of Eclipse-affiliated holdings, including new direct and estate-planning vehicle positions.

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Cerebras Systems Inc. (CBRS) director Susan Lior reported restructuring-related transfers of Class A common stock on September 2, 2026. An entity associated with her disposed of 902,236 shares through a pro-rata, in-kind distribution by Eclipse-affiliated funds to their partners for no additional consideration. She directly received 46,455 shares and an estate-planning vehicle she controls indirectly received 47,470 shares from the same in-kind distributions. Following these transactions, she held 290,661 shares directly, with additional shares held indirectly through controlled entities over which she may be deemed to have voting, investment and dispositive power.

Positive

  • None.

Negative

  • None.
Insider Susan Lior
Role Director
Type Security Shares Price Value
Other Class A Common Stock F1, F2 902,236 -- --
Other Class A Common Stock F3 46,455 -- --
Other Class A Common Stock F3, F4 47,470 -- --
Holdings After Transaction: Class A Common Stock — 290,661 shares (Direct); Class A Common Stock — 255,041 shares (Indirect, See footnote)
Footnotes (4)
  1. F1. Represents a pro-rata, in-kind distribution by the Eclipse Entities (as defined below) to its partners, for no additional consideration (the "Distribution").
  2. F2. Following the distribution, consists of (i) 439,397 shares of Class A common stock held by Eclipse Continuity Fund I, L.P. ("Eclipse Continuity Fund"); (ii) 3,595,108 shares of Class A common stock held by Eclipse SPV II, L.P. ("Eclipse SPV II"); (iii) 329,335 shares of Class A common stock held by Eclipse SPV XIII, L.P. ("Eclipse SPV XIII"); and (iv) 3,029,104 shares of Class A common stock held by Eclipse Ventures Fund I, L.P. ("Eclipse Fund," and together with Eclipse Continuity Fund, Eclipse SPV II, and Eclipse SPV XIII, "Eclipse Entities"). The Reporting Person is the sole managing member of the general partner of each of the Eclipse Entities and may be deemed to have voting, investment, and dispositive power with respect to the shares held by such entities.
  3. F3. The shares were obtained pursuant to a pro-rata, in-kind distribution from the Eclipse Entities, for no additional consideration.
  4. F4. The shares are held directly by an estate-planning vehicle which is controlled by the Reporting Person.
Indirect disposition 902,236 shares Pro-rata, in-kind distribution on September 2, 2026 by Eclipse-affiliated entities
Direct acquisition 46,455 shares Obtained via pro-rata, in-kind distribution on September 2, 2026
Indirect acquisition via estate-planning vehicle 47,470 shares Obtained via pro-rata, in-kind distribution on September 2, 2026
Restructuring-related share movements 996,161 shares Total shares involved in J-code restructuring transactions reported
Direct holdings after transaction 290,661 shares Class A common stock held directly by Susan Lior after acquisitions
pro-rata, in-kind distribution financial
"Represents a pro-rata, in-kind distribution by the Eclipse Entities to its partners"
estate-planning vehicle financial
"The shares are held directly by an estate-planning vehicle which is controlled"
voting, investment, and dispositive power financial
"may be deemed to have voting, investment, and dispositive power with respect"
indirect ownership financial
"The shares are held directly by an estate-planning vehicle which is controlled"

FAQ

What insider transactions did CBRS director Susan Lior report on September 2, 2026?

She reported three J-code restructuring transactions in Cerebras Systems Inc. Class A common stock: a 902,236-share indirect disposition and acquisitions of 46,455 shares directly and 47,470 shares indirectly through an estate-planning vehicle, all via pro-rata, in-kind distributions from Eclipse-affiliated funds.

How many CBRS shares did Susan Lior hold directly after the reported transactions?

After the September 2, 2026 transactions, Susan Lior held 290,661 shares of Cerebras Systems Inc. Class A common stock directly, as reported in the Form 4 filing.

What was the nature of the 902,236-share disposition reported for CBRS?

The 902,236-share disposition was a pro-rata, in-kind distribution by Eclipse-affiliated funds to their partners, for no additional consideration, reported as an indirect disposition associated with Susan Lior.

Did Susan Lior pay cash for the CBRS shares she acquired in these transactions?

No. The Form 4 states that the acquired shares were obtained pursuant to pro-rata, in-kind distributions from Eclipse-affiliated entities, for no additional consideration, indicating these were non-cash transfers.

How are indirect CBRS holdings attributed to Susan Lior in this Form 4?

Indirect holdings are through Eclipse-affiliated funds and an estate-planning vehicle she controls. She may be deemed to have voting, investment, and dispositive power over shares held by these entities, so their transactions are reported in her Form 4.

Were Susan Lior’s CBRS transactions made under a Rule 10b5-1 trading plan?

No. The document-level Rule 10b5-1 checkbox is not affirmed, and the footnotes describe the transactions as pro-rata, in-kind distributions from Eclipse-affiliated entities, with no indication of a Rule 10b5-1 trading plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google
Add on Google
Learn about SEC filing dates
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).
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*
Susan Lior

(Last)(First)(Middle)
C/O CEREBRAS SYSTEMS INC.
1237 E. ARQUES AVENUE

(Street)
SUNNYVALE CALIFORNIA 94085

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Cerebras Systems Inc. [ CBRS ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
09/02/2026
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
Class A Common Stock09/02/2026J(1)902,236D(1)7,392,944ISee footnote(2)
Class A Common Stock09/02/2026J(3)46,455A(3)290,661D
Class A Common Stock09/02/2026J(3)47,470A(3)255,041ISee footnote(4)
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. Represents a pro-rata, in-kind distribution by the Eclipse Entities (as defined below) to its partners, for no additional consideration (the "Distribution").
2. Following the distribution, consists of (i) 439,397 shares of Class A common stock held by Eclipse Continuity Fund I, L.P. ("Eclipse Continuity Fund"); (ii) 3,595,108 shares of Class A common stock held by Eclipse SPV II, L.P. ("Eclipse SPV II"); (iii) 329,335 shares of Class A common stock held by Eclipse SPV XIII, L.P. ("Eclipse SPV XIII"); and (iv) 3,029,104 shares of Class A common stock held by Eclipse Ventures Fund I, L.P. ("Eclipse Fund," and together with Eclipse Continuity Fund, Eclipse SPV II, and Eclipse SPV XIII, "Eclipse Entities"). The Reporting Person is the sole managing member of the general partner of each of the Eclipse Entities and may be deemed to have voting, investment, and dispositive power with respect to the shares held by such entities.
3. The shares were obtained pursuant to a pro-rata, in-kind distribution from the Eclipse Entities, for no additional consideration.
4. The shares are held directly by an estate-planning vehicle which is controlled by the Reporting Person.
/s/ Lior Susan09/04/2026
** 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)

Keep reading