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Cerebras (CBRS) holder shifts 1.9M shares between classes

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Cerebras Systems Inc. (CBRS) reported insider activity by investment entities affiliated with Foundation Capital, each a ten percent owner. On 2026-08-18, these entities converted an aggregate of 1,912,792 shares of Class B Common Stock into the same number of Class A Common Stock for no additional consideration. The filing also details pro rata, in-kind distributions of Class A shares among the funds, their general partners, and related management entities, which are described as not being purchases or sales of securities. All holdings are reported as indirect, with the management entities disclaiming beneficial ownership beyond their pecuniary interest.

Positive

  • None.

Negative

  • None.
Insider Foundation Capital Management Co. VIII, L.L.C., Foundation Capital VIII, L.P., Foundation Capital VIII Principals Fund, L.L.C., Foundation Capital Management Co. LF II, L.L.C., Foundation Capital Leadership Fund II, L.P.
Role 10% Owner | 10% Owner | 10% Owner | 10% Owner | 10% Owner
Type Security Shares Price Value
Conversion Class B Common Stock F1, F14, F2 1,738,913 -- --
Conversion Class B Common Stock F1, F14, F3 37,453 -- --
Conversion Class B Common Stock F1, F14, F4 136,426 -- --
Conversion Class A Common Stock F1, F2 1,738,913 -- --
Conversion Class A Common Stock F1, F3 37,453 -- --
Conversion Class A Common Stock F1, F4 136,426 -- --
Other Class A Common Stock F5, F2 1,738,913 $0.00 $0.00
Other Class A Common Stock F6, F3 37,453 $0.00 $0.00
Other Class A Common Stock F7, F4 136,426 $0.00 $0.00
Other Class A Common Stock F8, F9 449,885 $0.00 $0.00
Other Class A Common Stock F10, F9 449,885 $0.00 $0.00
Other Class A Common Stock F11, F12 28,373 $0.00 $0.00
Other Class A Common Stock F13, F12 29,741 $0.00 $0.00
Holdings After Transaction: Class B Common Stock — 10,433,479 shares (Indirect, By Foundation Capital VIII, L.P.); Class B Common Stock — 224,721 shares (Indirect, By Foundation Capital VIII Principals Fund, LLC); Class B Common Stock — 818,559 shares (Indirect, By Foundation Capital Leadership Fund II, L.P.); Class A Common Stock — 0 shares (Indirect, By Foundation Capital VIII, L.P.); Class A Common Stock — 0 shares (Indirect, By Foundation Capital VIII Principals Fund, L.L.C.); Class A Common Stock — 0 shares (Indirect, By Foundation Capital Leadership Fund II, L.P.); Class A Common Stock — 0 shares (Indirect, By Foundation Capital Management Co. VIII, L.L.C.); Class A Common Stock — 0 shares (Indirect, By Foundation Capital Management Co. LF II, L.L.C.)
Footnotes (14)
  1. F1. Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.
  2. F2. These securities are held by Foundation Capital VIII, L.P. ("FC8"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") serves as the sole general partner of FC8 and, as such, FCM8 possesses voting and dispositive power over the shares held by FC8, and may be deemed to have indirect beneficial ownership of the shares held by FC8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
  3. F3. These securities are held by Foundation Capital VIII Principals Fund, L.L.C. ("FC8P"). FCM8 serves as the sole manager of FC8P and, as such, FCM8 possesses voting and dispositive power over the shares held by FC8P, and may be deemed to have indirect beneficial ownership of the shares held by FC8P. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
  4. F4. These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
  5. F5. Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8 to its general partner and limited partners without additional consideration.
  6. F6. Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8P to its general partner and limited partners without additional consideration.
  7. F7. Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCLF2 to its general partner and limited partners without additional consideration.
  8. F8. Represents receipt of shares in the distributions in kind described in footnotes (5) and (6).
  9. F9. These securities are held by FCM8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
  10. F10. Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCM8 to its members without additional consideration.
  11. F11. Represents receipt of shares in the distribution in kind described in footnote (7).
  12. F12. These securities are held by FCMLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
  13. F13. Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCMLF2 to its members without additional consideration.
  14. F14. Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.
Class B to Class A conversion by Foundation Capital VIII, L.P. 1,738,913 shares Class B Common Stock converted into Class A Common Stock for no additional consideration on 2026-08-18
Class B to Class A conversion by Foundation Capital VIII Principals Fund, L.L.C. 37,453 shares Class B Common Stock converted into Class A Common Stock for no additional consideration on 2026-08-18
Class B to Class A conversion by Foundation Capital Leadership Fund II, L.P. 136,426 shares Class B Common Stock converted into Class A Common Stock for no additional consideration on 2026-08-18
Total Class B shares converted 1,912,792 shares Aggregate Class B Common Stock converted into Class A Common Stock via derivative conversions (Code C) on 2026-08-18
Restructuring-related share movements 2,870,676 shares Shares involved in entity restructuring transactions (Code J) described as pro rata, in-kind distributions with no additional consideration
Class B shares remaining at Foundation Capital VIII, L.P. 10,433,479 shares Class B Common Stock indirectly held after reported conversion transaction by Foundation Capital VIII, L.P.
Class B Common Stock financial
"Each share of Class B Common Stock was converted into one share"
A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.
Class A Common Stock financial
"converted into one share of Class A Common Stock for no additional"
Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.
pro rata, in-kind distribution financial
"Represents a pro rata, in-kind distribution, and not a purchase or sale"
dispositive power financial
"possesses voting and dispositive power over the shares held by FC8"
Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.
beneficial ownership financial
"may be deemed to have indirect beneficial ownership of the shares"
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 such securities except to the extent of its pecuniary interest"

FAQ

What insider transactions were reported for Cerebras Systems Inc. (CBRS) on 2026-08-18?

Affiliated Foundation Capital entities reported converting 1,912,792 shares of Class B Common Stock into Class A Common Stock and conducting several pro rata, in-kind distributions of Class A shares among funds and management entities, all for no additional consideration and characterized as not being purchases or sales.

How many Cerebras (CBRS) Class B shares did Foundation Capital entities convert to Class A shares?

Foundation Capital VIII, related principals, and leadership funds converted an aggregate of 1,912,792 shares of Cerebras Class B Common Stock into an equal number of Class A shares on 2026-08-18, with each Class B share converting on a one-for-one basis for no additional consideration.

Were the Cerebras (CBRS) insider transactions reported as market purchases or sales?

No. The conversion of Class B into Class A shares was for no additional consideration, and the distributions among Foundation Capital funds and management entities are described as pro rata, in-kind distributions and specifically as not purchases or sales of securities.

Who holds voting and dispositive power over the Cerebras (CBRS) shares involved?

Voting and dispositive power over the reported Cerebras shares is held by entities such as Foundation Capital Management Co. VIII, L.L.C. and Foundation Capital Management Co. LF II, L.L.C., which serve as general partner or manager and may be deemed to have indirect beneficial ownership subject to pecuniary interest.

What does the Cerebras (CBRS) filing say about the terms of Class B Common Stock?

Each share of Cerebras Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder, on a one-for-one basis, and according to the disclosure, this conversion right does not expire.

Did the reporting persons in the Cerebras (CBRS) Form 4 claim full beneficial ownership of the shares?

No. The management entities, including Foundation Capital Management Co. VIII, L.L.C. and Foundation Capital Management Co. LF II, L.L.C., expressly disclaim beneficial ownership of the reported securities except to the extent of their pecuniary interest in the relevant funds or entities.

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

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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*
Foundation Capital Management Co. VIII, L.L.C.

(Last)(First)(Middle)
C/O FOUNDATION CAPITAL
550 HIGH STREET, 3RD FLOOR

(Street)
PALO ALTO CALIFORNIA 94301

(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)
DirectorX10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/18/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
XForm 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 Stock08/18/2026C1,738,913A(1)1,738,913IBy Foundation Capital VIII, L.P.(2)
Class A Common Stock08/18/2026C37,453A(1)37,453IBy Foundation Capital VIII Principals Fund, L.L.C.(3)
Class A Common Stock08/18/2026C136,426A(1)136,426IBy Foundation Capital Leadership Fund II, L.P.(4)
Class A Common Stock08/18/2026J(5)1,738,913D$00IBy Foundation Capital VIII, L.P.(2)
Class A Common Stock08/18/2026J(6)37,453D$00IBy Foundation Capital VIII Principals Fund, L.L.C.(3)
Class A Common Stock08/18/2026J(7)136,426D$00IBy Foundation Capital Leadership Fund II, L.P.(4)
Class A Common Stock08/18/2026J(8)449,885A$0449,885IBy Foundation Capital Management Co. VIII, L.L.C.(9)
Class A Common Stock08/18/2026J(10)449,885D$00IBy Foundation Capital Management Co. VIII, L.L.C.(9)
Class A Common Stock08/18/2026J(11)28,373A$029,741IBy Foundation Capital Management Co. LF II, L.L.C.(12)
Class A Common Stock08/18/2026J(13)29,741D$00IBy Foundation Capital Management Co. LF II, L.L.C.(12)
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
Class B Common Stock(1)08/18/2026C1,738,913 (14) (14)Class A Common Stock1,738,913(1)10,433,479IBy Foundation Capital VIII, L.P.(2)
Class B Common Stock(1)08/18/2026C37,453 (14) (14)Class A Common Stock37,453(1)224,721IBy Foundation Capital VIII Principals Fund, LLC(3)
Class B Common Stock(1)08/18/2026C136,426 (14) (14)Class A Common Stock136,426(1)818,559IBy Foundation Capital Leadership Fund II, L.P.(4)
1. Name and Address of Reporting Person*
Foundation Capital Management Co. VIII, L.L.C.

(Last)(First)(Middle)
C/O FOUNDATION CAPITAL
550 HIGH STREET, 3RD FLOOR

(Street)
PALO ALTO CALIFORNIA 94301

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Foundation Capital VIII, L.P.

(Last)(First)(Middle)
C/O FOUNDATION CAPITAL
550 HIGH STREET, 3RD FLOOR

(Street)
PALO ALTO CALIFORNIA 94301

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Foundation Capital VIII Principals Fund, L.L.C.

(Last)(First)(Middle)
C/O FOUNDATION CAPITAL
550 HIGH STREET, 3RD FLOOR

(Street)
PALO ALTO CALIFORNIA 94301

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Foundation Capital Management Co. LF II, L.L.C.

(Last)(First)(Middle)
C/O FOUNDATION CAPITAL
550 HIGH STREET, 3RD FLOOR

(Street)
PALO ALTO CALIFORNIA 94301

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Foundation Capital Leadership Fund II, L.P.

(Last)(First)(Middle)
C/O FOUNDATION CAPITAL
550 HIGH STREET, 3RD FLOOR

(Street)
PALO ALTO CALIFORNIA 94301

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
Explanation of Responses:
1. Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.
2. These securities are held by Foundation Capital VIII, L.P. ("FC8"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") serves as the sole general partner of FC8 and, as such, FCM8 possesses voting and dispositive power over the shares held by FC8, and may be deemed to have indirect beneficial ownership of the shares held by FC8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
3. These securities are held by Foundation Capital VIII Principals Fund, L.L.C. ("FC8P"). FCM8 serves as the sole manager of FC8P and, as such, FCM8 possesses voting and dispositive power over the shares held by FC8P, and may be deemed to have indirect beneficial ownership of the shares held by FC8P. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
4. These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
5. Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8 to its general partner and limited partners without additional consideration.
6. Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8P to its general partner and limited partners without additional consideration.
7. Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCLF2 to its general partner and limited partners without additional consideration.
8. Represents receipt of shares in the distributions in kind described in footnotes (5) and (6).
9. These securities are held by FCM8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
10. Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCM8 to its members without additional consideration.
11. Represents receipt of shares in the distribution in kind described in footnote (7).
12. These securities are held by FCMLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
13. Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCMLF2 to its members without additional consideration.
14. Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.
Foundation Capital Management Co. VIII, L.L.C., By: /s/ Ashu Garg, Manager08/20/2026
Foundation Capital VIII, L.P., By: Foundation Capital Management Co. VIII, L.L.C., its General Partner, By: /s/ Ashu Garg, Manager08/20/2026
Foundation Capital VIII Principals Fund, L.L.C., By: Foundation Capital Management Co. VIII, L.L.C., its Manager, By: /s/ Ashu Garg, Manager08/20/2026
Foundation Capital Management Co. LF II, L.L.C., By: /s/ Ashu Garg, Manager08/20/2026
Foundation Capital Leadership Fund II, L.P., By: Foundation Capital Management Co. LF II, L.L.C., its General Partner, By: /s/ Ashu Garg, Manager08/20/2026
** 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)