Key facts
- This page summarizes Robert Patrick Komin Jr.'s Form 4 filing for Cerebras Systems Inc. (CBRS).
- 6 reported transactions and 4 derivative rows are listed below.
- Accepted by SEC: 15 May 2026, 18:50.
Robert Patrick Komin Jr. - 15 May 2026 Form 4 Insider Report for Cerebras Systems Inc. (CBRS)
- Reporting relationship
- Chief Financial Officer
- Issuer ticker
- CBRS
- Reported as of
- 15 May 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 15 May 2026, 18:50:15 UTC
- Prior SEC filing
- 13 May 2026
- Next SEC filing
- 20 Aug 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Shirley Li, Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Robert Patrick Komin Jr. filed Form 4 for Cerebras Systems Inc. (CBRS) on 15 May 2026.
Change
- Previous filing in this sequence was filed on 13 May 2026.
- Current net transaction value: $0.
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 0001648800
Primary reporting owner
Komin Robert Patrick Jr.
- Relationship
- Chief Financial Officer
- Address
- C/O CEREBRAS SYSTEMS INC., 1237 E. ARQUES AVENUE, SUNNYVALE
- Signature
- /s/ Shirley Li, Attorney-in-Fact
- Signature date
- 15 May 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
CBRS
transaction
Class A Common Stock
Other
- Transaction value
- Shares
- -854,153
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 15 May 2026
- Ownership
- Direct
- Footnotes
- F1
CBRS
transaction
Class A Common Stock
Other
- Transaction value
- Shares
- -175,000
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 15 May 2026
- Ownership
- By GRAT
- Footnotes
- F1
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
CBRS
transaction
Derivative
Class B Common Stock
Other
- Transaction value
- Shares
- +854,153
- Change %
- Price
- Shares after
- 854,153
- Date
- 15 May 2026
- Ownership
- Direct
- Underlying class
- Class A Common Stock
- Underlying amount
- 854,153
- Exercise price
- Footnotes
- F1
CBRS
transaction
Derivative
Class B Common Stock
Other
- Transaction value
- Shares
- +175,000
- Change %
- Price
- Shares after
- 175,000
- Date
- 15 May 2026
- Ownership
- By GRAT
- Underlying class
- Class A Common Stock
- Underlying amount
- 175,000
- Exercise price
- Footnotes
- F1
CBRS
transaction
Derivative
Stock Option
Other
- Transaction value
- Shares
- -18,248
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 15 May 2026
- Ownership
- Direct
- Underlying class
- Class A Common Stock
- Underlying amount
- 18,248
- Exercise price
- $5.48
- Footnotes
- F1, F2
CBRS
transaction
Derivative
Stock Option
Other
- Transaction value
- Shares
- +18,248
- Change %
- Price
- Shares after
- 18,248
- Date
- 15 May 2026
- Ownership
- Direct
- Underlying class
- Class B Common Stock
- Underlying amount
- 18,248
- Exercise price
- $5.48
- Footnotes
- F1, F2
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 2 footnotes
Footnote F1
Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock.
Footnote F2
The stock option vests according to its terms and will be fully vested on March 11, 2028.