Cerebras Systems CBRS Insider Ownership

NASDAQ CBRS
$198.37 +4.23 (+2.18%)
At close: Sep 18, 2026 · 4:00 PM EDT

Insider Holdings by Owner

1.70Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
share count not reported for this filer set
Shares Held by Insiders
15.20Mn
filed for Sep 2026
+9.58% QoQ
Shares Outstanding
not reported
Direct Holdings
846.72K
Indirect: 14.35Mn
Net Shares Traded (QoQ)
+1.33Mn
net buying in Sep 2026
Insiders Holding Shares
9
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest
Average ownership
Peak ownership

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter
Net over range
Buying quarters
Form 4 Holdings

Insiders Holding CBRS

Insiders 9
Shares held 1.70Mn
Of outstanding
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Lior Susan Director 315,124 278,775 593,899 35.0% 17 Sep, 2026
2 Sean Lie Chief Technology Officer 345,569 0 345,569 20.3% 08 Sep, 2026
3 Steven Vassallo Director 0 311,595 311,595 18.3% 08 Sep, 2026
4 Eric Vishria Director 0 231,347 231,347 13.6% 10 Sep, 2026
5 Dhiraj Mallick Chief Operating Officer 120,000 0 120,000 7.1% 20 Aug, 2026
6 Robert Patrick Jr. Komin Chief Financial Officer 32,500 0 32,500 1.9% 20 Aug, 2026
7 Capital Management Co. Viii, L.L.C. Foundation TenPercentOwner 0 29,963 29,963 1.8% 18 Aug, 2026
8 Andrew D. Feldman Ceo, President 16,853 806 17,659 1.0% 08 Sep, 2026
9 Yagnesh Patel Chief Accounting Officer 16,676 0 16,676 1.0% 20 Aug, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

565 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
15 Sep, 2026 Lior Susan Director Disposed J 451,115 6,941,829 Indirect
15 Sep, 2026 Lior Susan Director Acquired J 24,463 315,124 Direct
15 Sep, 2026 Lior Susan Director Acquired J 23,734 278,775 Indirect
08 Sep, 2026 Eric Vishria Director Acquired J 44,507 $0.00 $0 231,347 Indirect
04 Sep, 2026 Steven Vassallo Director Disposed S 21,117 $209.81 $4.43Mn 200,860 Indirect
04 Sep, 2026 Sean Lie Chief Technology Officer Acquired C 46,141 415,067 Direct
04 Sep, 2026 Andrew D. Feldman Ceo, President Acquired C 37,441 $0.00 $0 54,294 Direct
04 Sep, 2026 Steven Vassallo Director Disposed S 21,773 $210.37 $4.58Mn 179,087 Indirect
04 Sep, 2026 Andrew D. Feldman Ceo, President Disposed S 1,100 $199.18 $219.10K 53,194 Direct
04 Sep, 2026 Sean Lie Chief Technology Officer Disposed G 16,038 $0.00 $0 399,029 Direct
04 Sep, 2026 Andrew D. Feldman Ceo, President Disposed S 300 $200.79 $60.24K 52,894 Direct
04 Sep, 2026 Sean Lie Chief Technology Officer Disposed S 53,460 $210.16 $11.24Mn 345,569 Direct
04 Sep, 2026 Steven Vassallo Director Disposed S 7,110 $211.56 $1.50Mn 171,977 Indirect
04 Sep, 2026 Andrew D. Feldman Ceo, President Disposed S 300 $201.75 $60.53K 52,594 Direct
04 Sep, 2026 Sean Lie Chief Technology Officer Disposed M 46,141 $0.00 $0 289,021 Direct
04 Sep, 2026 Andrew D. Feldman Ceo, President Disposed S 900 $202.97 $182.67K 51,694 Direct
04 Sep, 2026 Andrew D. Feldman Ceo, President Disposed S 1,200 $204.06 $244.87K 50,494 Direct
04 Sep, 2026 Sean Lie Chief Technology Officer Acquired M 46,141 $0.00 $0 7,629,133 Direct
04 Sep, 2026 Sean Lie Chief Technology Officer Disposed C 46,141 $0.00 $0 7,582,992 Direct
04 Sep, 2026 Andrew D. Feldman Ceo, President Disposed S 800 $206.30 $165.04K 49,694 Direct