ARK Investment Management LLC bought CBRS · INSIDER
Data sources SEC Form 4 1h ago
House PTR 1h ago
SEC 13F 1h ago
Robinhood Chain 1h ago
SEC 13F / NEW Verified data
AM 13F filer · Cerebras Systems Inc. · Cerebras Systems Inc
○ Watch CBRS○ Watch filer
Side BUY
Δ value $168.98M
Shares 764.6K
Price $221
Executed Not disclosed
Disclosed Aug 14, 2026 Customize layout
CBRS · daily Yahoo Finance chart API
◉ This trade, on the day it was made▼ Disclosure● Material company filing◯ Other disclosed buy◯ Other disclosed sellUnofficial public endpoint; daily OHLCV, split-adjusted. Replace with a licensed feed for production.
Insider Score Experimental signal Transaction type +12 / 20
NEW
Relative size +12 / 25
$169.0M quarter-over-quarter change
Filing timing 0 / 15
Not applicable — 13F reports quarter-end holdings, execution dates are not disclosed
Historical behavior +8 / 15
First recorded trade by this actor in this security
Frequency & clustering +5 / 15
1 other actor traded the same direction within 14 days
Market events 0 / 10
No material company filing within 60 days after the trade
Other disclosed activity · CBRS Score Actor Security Side Value Executed Disclosed Lag Source Evidence 15 CBRS Cerebras Systems Inc. Token transfer
TRANSFER $35K 379 sh
Nov 4, 2026
Verified data Read directly from the primary public document; every field below is as reported by the filer.
Source
Publisher U.S. Securities and Exchange Commission (EDGAR)
Document ID 0001104659-26-096910 Timestamps
Event (reported) Not reported
Published Aug 14, 2026
Ingested by INSIDER Nov 4, 22:39 UTC
Last re-read Nov 10, 08:27 UTC Extracted facts
Filer ARK Investment Management LLC
Role 13F filer
Transaction NEW
Asset Cerebras Systems Inc
Ticker CBRS
Shares 764.6K
Price per share $221
Value $168,979,473
Owned after transaction 764.6K shares What this establishes ARK Investment Management LLC reported this position change in a quarterly 13F holdings report. 13F shows quarter-end positions only — it does not say when during the quarter shares were bought or sold.
Extraction
Method 13F information table XML
Confidence 1.00
13F filer ARK Investment Management LLCcik:0001697748
Issuer Cerebras Systems Inc.cik:0002021728 Revision history · 0 No field has changed since this record was first ingested.
The Insider Score measures how far a disclosure deviates from normal filing patterns. A high score is a prompt for research, not evidence of illegal insider trading.
Nov 4, 22:15 UTCtraded Nov 4, 2026
15 CBRS Cerebras Systems Inc. Token transfer
TRANSFER $35K 379 sh
Nov 4, 2026 Nov 4, 22:12 UTCtraded Nov 4, 2026
onchain Robinhood Chain Evidence
Evidence Close
17 CBRS Cerebras Systems Inc. Mint
BUY $35K 379 sh
Nov 4, 2026 Nov 4, 22:12 UTCtraded Nov 4, 2026
onchain Robinhood Chain Evidence
Evidence Close
11 LS Lie Sean Chief Technology Officer
CBRS Cerebras Systems Inc. Open-market sale · 10b5-1 plan
SELL $5.24M 45.4K sh
Oct 27, 2026 Oct 28, 2026traded Oct 27, 2026
+1d SEC Form 4 Evidence
Evidence Close
0 LS Lie Sean Chief Technology Officer
CBRS Cerebras Systems Inc. Option exercise · 10b5-1 plan
M — 3,125 sh
Oct 27, 2026 Oct 28, 2026traded Oct 27, 2026
+1d SEC Form 4 Evidence
Evidence Close
7 LS Lie Sean Chief Technology Officer
CBRS Cerebras Systems Inc. Open-market sale · 10b5-1 plan
SELL $1.69M 14.5K sh
Oct 27, 2026 Oct 28, 2026traded Oct 27, 2026
+1d SEC Form 4 Evidence
Evidence Close
0 LS Lie Sean Chief Technology Officer
CBRS Cerebras Systems Inc. Gift · 10b5-1 plan
G — 18.0K sh
Oct 27, 2026 Oct 28, 2026traded Oct 27, 2026
+1d SEC Form 4 Evidence
Evidence Close
0 LS Lie Sean Chief Technology Officer
CBRS Cerebras Systems Inc. Derivative conversion · 10b5-1 plan
C — 32.0K sh
Oct 27, 2026 Oct 28, 2026traded Oct 27, 2026
+1d SEC Form 4 Evidence
Evidence Close
0 LS Lie Sean Chief Technology Officer
CBRS Cerebras Systems Inc. Option exercise · 10b5-1 plan
M — 32.0K sh
Oct 27, 2026 Oct 28, 2026traded Oct 27, 2026
+1d SEC Form 4 Evidence
Evidence Close
0 LS Lie Sean Chief Technology Officer
CBRS Cerebras Systems Inc. Derivative conversion · 10b5-1 plan
C — 32.0K sh
Oct 27, 2026 Oct 28, 2026traded Oct 27, 2026
+1d SEC Form 4 Evidence
Evidence Close
0 LS Lie Sean Chief Technology Officer
CBRS Cerebras Systems Inc. Option exercise · 10b5-1 plan
M — 28.9K sh
Oct 27, 2026 Oct 28, 2026traded Oct 27, 2026
+1d SEC Form 4 Evidence
Evidence Close
0 LS Lie Sean Chief Technology Officer
CBRS Cerebras Systems Inc. Open-market sale · 10b5-1 plan
SELL $11K 100 sh
Oct 27, 2026 Oct 28, 2026traded Oct 27, 2026
+1d SEC Form 4 Evidence
Evidence Close
33 MD Mallick Dhiraj Chief Operating Officer
CBRS Cerebras Systems Inc. Open-market sale · 10b5-1 plan
SELL $3.38M 17.0K sh
Sep 29, 2026 Sep 30, 2026traded Sep 29, 2026
+1d SEC Form 4 Evidence
Evidence Close
11 MD Mallick Dhiraj Chief Operating Officer
CBRS Cerebras Systems Inc. Derivative conversion · 10b5-1 plan
C — 276.0K sh
Sep 29, 2026 Sep 30, 2026traded Sep 29, 2026
+1d SEC Form 4 Evidence
Evidence Close
0 MD Mallick Dhiraj Chief Operating Officer
CBRS Cerebras Systems Inc. Option exercise · 10b5-1 plan
M — 276.0K sh
Sep 29, 2026 Sep 30, 2026traded Sep 29, 2026
+1d SEC Form 4 Evidence
Evidence Close
30 PY Patel Yagnesh Chief Accounting Officer
CBRS Cerebras Systems Inc. Open-market sale · 10b5-1 plan
SELL $270K 1,320 sh
Sep 28, 2026 Sep 30, 2026traded Sep 28, 2026
+2d SEC Form 4 Evidence
Evidence Close
38 KP Komin Robert Patrick Jr. Chief Financial Officer
CBRS Cerebras Systems Inc. Open-market sale · 10b5-1 plan
SELL $585K 3,000 sh
Sep 29, 2026 Sep 30, 2026traded Sep 29, 2026
+1d SEC Form 4 Evidence
Evidence Close
29 MD Mallick Dhiraj Chief Operating Officer
CBRS Cerebras Systems Inc. Open-market sale · 10b5-1 plan
SELL $1.79M 8,729 sh
Sep 29, 2026 Sep 30, 2026traded Sep 29, 2026
+1d SEC Form 4 Evidence
Evidence Close
23 KP Komin Robert Patrick Jr. Chief Financial Officer
CBRS Cerebras Systems Inc. Open-market sale · 10b5-1 plan
SELL $163K 800 sh
Sep 29, 2026 Sep 30, 2026traded Sep 29, 2026
+1d SEC Form 4 Evidence
Evidence Close
11 MD Mallick Dhiraj Chief Operating Officer
CBRS Cerebras Systems Inc. Derivative conversion · 10b5-1 plan
C — 276.0K sh
Sep 29, 2026 Sep 30, 2026traded Sep 29, 2026
+1d SEC Form 4 Evidence
Evidence Close
