Key facts
- This page summarizes Steven Vassallo's Form 4 filing for Cerebras Systems Inc. (CBRS).
- 25 reported transactions and 6 derivative rows are listed below.
- Accepted by SEC: 18 Aug 2026, 18:38.
Steven Vassallo - 24 Jun 2026 Form 4 Insider Report for Cerebras Systems Inc. (CBRS)
- Reporting relationship
- Director
- Issuer ticker
- CBRS
- Reported as of
- 24 Jun 2026
- Net transaction value
- -$10,909,101
- SEC form
- 4
- Accepted by SEC
- 18 Aug 2026, 18:38:56 UTC
- Prior SEC filing
- 15 May 2026
- Next SEC filing
- 20 Aug 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Steven Vassallo
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Steven Vassallo filed Form 4 for Cerebras Systems Inc. (CBRS) on 18 Aug 2026.
Change
- Previous filing in this sequence was filed on 15 May 2026.
- Current net transaction value: -$10,909,101.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001567929
Primary reporting owner
Vassallo Steven
- Relationship
- Director
- Address
- C/O FOUNDATION CAPITAL, 550 HIGH STREET, 3RD FLOOR, PALO ALTO
- Signature
- /s/ Steven Vassallo
- Signature date
- 18 Aug 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
CBRS
transaction
Class A Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +1,391,131
- Change %
- Price
- Shares after
- 1,391,131
- Date
- 24 Jun 2026
- Ownership
- By Foundation Capital VIII, L.P.
- Footnotes
- F1, F2
CBRS
transaction
Class A Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +29,963
- Change %
- Price
- Shares after
- 29,963
- Date
- 24 Jun 2026
- Ownership
- By Foundation Capital VIII Principals Fund, LLC
- Footnotes
- F1, F3
CBRS
transaction
Class A Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +109,141
- Change %
- Price
- Shares after
- 109,141
- Date
- 24 Jun 2026
- Ownership
- By Foundation Capital Leadership Fund II, L.P.
- Footnotes
- F1
CBRS
transaction
Class A Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +347,782
- Change %
- +25%
- Price
- Shares after
- 1,738,913
- Date
- 14 Aug 2026
- Ownership
- By Foundation Capital VIII, L.P.
- Footnotes
- F1, F2
CBRS
transaction
Class A Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +7,490
- Change %
- +25%
- Price
- Shares after
- 37,453
- Date
- 14 Aug 2026
- Ownership
- By Foundation Capital VIII Principals Fund, L.L.C.
- Footnotes
- F1, F3
CBRS
transaction
Class A Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +27,285
- Change %
- +25%
- Price
- Shares after
- 136,426
- Date
- 14 Aug 2026
- Ownership
- By Foundation Capital Leadership Fund II, L.P.
- Footnotes
- F1, F4
CBRS
transaction
Class A Common Stock
Other
- Transaction value
- Shares
- -1,738,913
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 14 Aug 2026
- Ownership
- By Foundation Capital VIII, L.P.
- Footnotes
- F2, F5
CBRS
transaction
Class A Common Stock
Other
- Transaction value
- Shares
- -37,453
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 14 Aug 2026
- Ownership
- By Foundation Capital VIII Principals Fund, L.L.C.
- Footnotes
- F3, F6
CBRS
transaction
Class A Common Stock
Other
- Transaction value
- Shares
- -136,426
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 14 Aug 2026
- Ownership
- By Foundation Capital Leadership Fund II, L.P.
- Footnotes
- F4, F7
CBRS
transaction
Class A Common Stock
Other
- Transaction value
- Shares
- +449,885
- Change %
- Price
- $0.000000*
- Shares after
- 449,885
- Date
- 14 Aug 2026
- Ownership
- By Foundation Capital Management Co. VIII, L.L.C.
- Footnotes
- F8, F9
CBRS
transaction
Class A Common Stock
Other
- Transaction value
- Shares
- -449,885
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 14 Aug 2026
- Ownership
- By Foundation Capital Management Co. VIII, L.L.C.
- Footnotes
- F9, F10
CBRS
transaction
Class A Common Stock
Other
- Transaction value
- Shares
- +1,368
- Change %
- Price
- $0.000000*
- Shares after
- 1,368
- Date
- 14 Aug 2026
- Ownership
- By Foundation Capital Management Co. LF II, L.L.C.
- Footnotes
- F11, F12
CBRS
transaction
Class A Common Stock
Other
- Transaction value
- Shares
- +99,599
- Change %
- Price
- $0.000000*
- Shares after
- 99,599
- Date
- 14 Aug 2026
- Ownership
- By Revocable Trust
- Footnotes
- F13, F14
CBRS
transaction
Class A Common Stock
Other
- Transaction value
- Shares
- +50,944
- Change %
- Price
- $0.000000*
- Shares after
- 50,944
- Date
- 14 Aug 2026
- Ownership
- By Irrevocable Trust
- Footnotes
- F15, F16
CBRS
transaction
Class A Common Stock
Sale
- Transaction value
- $1,315,807
- Shares
- -6,081
- Change %
- -6.1%
- Price
- $216.38
- Shares after
- 93,518
- Date
- 14 Aug 2026
- Ownership
- By Revocable Trust
- Footnotes
- F14, F17
CBRS
transaction
Class A Common Stock
Sale
- Transaction value
- $3,625,442
- Shares
- -16,671
- Change %
- -18%
- Price
- $217.47
- Shares after
- 76,847
- Date
- 14 Aug 2026
- Ownership
- By Revocable Trust
- Footnotes
- F14, F18
CBRS
transaction
Class A Common Stock
Sale
- Transaction value
- $2,585,256
- Shares
- -11,834
- Change %
- -15%
- Price
- $218.46
- Shares after
- 65,013
- Date
- 14 Aug 2026
- Ownership
- By Revocable Trust
- Footnotes
- F14, F19
CBRS
transaction
Class A Common Stock
Sale
- Transaction value
- $3,142,609
- Shares
- -14,323
- Change %
- -22%
- Price
- $219.41
- Shares after
- 50,690
- Date
- 14 Aug 2026
- Ownership
- By Revocable Trust
- Footnotes
- F14, F20
CBRS
transaction
Class A Common Stock
Sale
- Transaction value
- $239,987
- Shares
- -1,091
- Change %
- -2.2%
- Price
- $219.97
- Shares after
- 49,599
- Date
- 14 Aug 2026
- Ownership
- By Revocable Trust
- Footnotes
- F14, F21
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
CBRS
transaction
Derivative
Class B Common Stock
Conversion of derivative security
- Transaction value
- Shares
- -1,391,131
- Change %
- -10%
- Price
- Shares after
- 12,520,174
- Date
- 24 Jun 2026
- Ownership
- By Foundation Capital VIII, L.P.
- Underlying class
- Class A Common Stock
- Underlying amount
- 1,391,131
- Exercise price
- Footnotes
- F1, F2, F22
CBRS
transaction
Derivative
Class B Common Stock
Conversion of derivative security
- Transaction value
- Shares
- -29,963
- Change %
- -10%
- Price
- Shares after
- 269,664
- Date
- 24 Jun 2026
- Ownership
- By Foundation Capital VIII Principals Fund, LLC
- Underlying class
- Class A Common Stock
- Underlying amount
- 29,963
- Exercise price
- Footnotes
- F1, F3, F22
CBRS
transaction
Derivative
Class B Common Stock
Conversion of derivative security
- Transaction value
- Shares
- -109,141
- Change %
- -10%
- Price
- Shares after
- 982,270
- Date
- 24 Jun 2026
- Ownership
- By Foundation Capital Leadership Fund II, L.P.
- Underlying class
- Class A Common Stock
- Underlying amount
- 109,141
- Exercise price
- Footnotes
- F1, F4, F22
CBRS
transaction
Derivative
Class B Common Stock
Conversion of derivative security
- Transaction value
- Shares
- -347,782
- Change %
- -2.8%
- Price
- Shares after
- 12,172,392
- Date
- 14 Aug 2026
- Ownership
- By Foundation Capital VIII, L.P.
- Underlying class
- Class A Common Stock
- Underlying amount
- 347,782
- Exercise price
- Footnotes
- F1, F2, F22
CBRS
transaction
Derivative
Class B Common Stock
Conversion of derivative security
- Transaction value
- Shares
- -7,490
- Change %
- -2.8%
- Price
- Shares after
- 262,174
- Date
- 14 Aug 2026
- Ownership
- By Foundation Capital VIII Principals Fund, LLC
- Underlying class
- Class A Common Stock
- Underlying amount
- 7,490
- Exercise price
- Footnotes
- F1, F3, F22
CBRS
transaction
Derivative
Class B Common Stock
Conversion of derivative security
- Transaction value
- Shares
- -27,285
- Change %
- -2.8%
- Price
- Shares after
- 954,985
- Date
- 14 Aug 2026
- Ownership
- By Foundation Capital Leadership Fund II, L.P.
- Underlying class
- Class A Common Stock
- Underlying amount
- 27,285
- Exercise price
- Footnotes
- F1, F4, F22
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 22 footnotes
Footnote F1
Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.
Footnote F2
Securities are directly held by Foundation Capital VIII, L.P. ("FC8"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") is the general partner of FC8. The Reporting Person is a manager of FCM8 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.
Footnote F3
Securities are directly held by Foundation Capital VIII Principals Fund, L.L.C. ("FC8P"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") is the manager of FC8P. The Reporting Person is a manager of FCM8 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.
Footnote F4
Securities are directly held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co. LF II, L.L.C. ("FCMLF2") is the general partner of FCLF2. The Reporting Person is a manager of FCMLF2 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.
Footnote 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.
Footnote 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.
Footnote 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.
Footnote F8
Represents receipt of shares in the distributions in kind described in footnotes (5) and (6).
Footnote F9
Securities are directly held by FCM8. The Reporting Person is a manager of FCM8 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.
Footnote F10
Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCM8 to its members without additional consideration.
Footnote F11
Represents receipt of shares in the distribution in kind described in footnote (7).
Footnote F12
Securities are directly held by FCMLF2. The Reporting Person is a manager of FCMLF2 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.
Footnote F13
Represents receipt of shares in the distributions in kind described in footnotes (6) and (10).
Footnote F14
The securities are held by a revocable family trust, of which the Reporting Person is a co-trustee. The Reporting Person disclaims beneficial ownership of such shares except to the extent of his proportionate pecuniary interest therein.
Footnote F15
Represents receipt of shares in the distribution in kind described in footnote (10).
Footnote F16
The securities are held by an irrevocable GST trust, of which the Reporting Person is a co-trustee. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
Footnote F17
The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $215.79 to $216.78 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 securities sold at each separate price within the range set forth in this footnote.
Footnote F18
The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $216.87 to $217.86 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 securities sold at each separate price within the range set forth in this footnote.
Footnote F19
The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $217.90 to $218.89 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 securities sold at each separate price within the range set forth in this footnote.
Footnote F20
The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $218.90 to $219.89 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 securities sold at each separate price within the range set forth in this footnote.
Footnote F21
The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $219.90 to $220.15 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 securities sold at each separate price within the range set forth in this footnote.
Footnote F22
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.