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144 ·Filed Jun 8, 2026

BLLN

BillionToOne, Inc.
NEUTRAL
Impact 2/10
Horizondays Processed4mo ago SEC0001959173-26-004437
Form 144 — notice of proposed sale of securities
Actionable Insight • Neutral

This is a routine insider sale notice with no material impact. Monitor for any subsequent Form 4 filings to confirm execution, but the small size relative to market cap suggests no significant read-through.

DirectionNeutral
Confidencehigh
Horizondays
Final — all horizons settled through T+60d
BLLN ▲ +1.82% at T+60d
NEUTRAL call +1.82% · α vs SPY -1.69% · entry $94.43 → $96.15
Entry = T+0 close
Jun 8, 2026
via day close
T+1d
+8.43%
call +8.43% · α +8.72%
$102.39
settled 5mo ago
T+5d
+10.08%
call +10.08% · α +7.97%
$103.95
settled 4mo ago
T+20d
+30.68%
call +30.68% · α +29.05%
$123.40
settled 4mo ago
T+60d
+1.82%
call +1.82% · α -1.69%
$96.15
settled 8w ago

Price Chart

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Executive Summary

Shan Sakakibara, an officer of BillionToOne, filed a Form 144 notice of intent to sell 8,000 Class A shares valued at approximately $785,800. This represents a modest insider sale relative to the company's $4.5B market cap and does not signal a change in fundamentals.

Key Facts

  • Insider: Shan Sakakibara, Officer
  • Shares to be sold: 8,000 Class A shares
  • Estimated value: $785,800
  • Shares acquired on 01/07/2019 as pre-IPO shares for cash
  • Sale intended on or after 06/08/2026
  • Market cap of issuer: $4.5B

Financial Impact

Sale of 8,000 shares valued at ~$785,800, representing a tiny fraction of the $4.5B market cap.

dilution

Risk Factors

  • Insider may not complete the sale; Form 144 is only an intent to sell.
  • No context on total holdings or percentage of insider's stake being sold.

Market Snapshot

Exchange
Nasdaq
Sector
Services-Medical Laboratories
Analyst Consensus
79% bullish (14 analysts)

Investment Themes

Healthcare & Medical Devices

Documents Analyzed

This report is based on 3 SEC documents filed with EDGAR.

DocumentAccession Number
144 Filing (Primary)0001959173-26-004437
Document: 0001959173-26-004437-index.html0001959173-26-004437
Document: 0001959173-26-004437.txt0001959173-26-004437
29 reports for BLLN
Performance horizon
100% Hit rate @ T+60 3 of 3 directional calls Went positive at some point 9 of 9 best @ T+60▲ +26.26%Mar 4, 2026
Filters
Rows
Reports for BLLN — sortable, filterable
TypeNow
Sep 30, 2026
26d ago
Insider Cluster
BEARISH ★ 5/10
$105.76awaiting T+60—$111.46 (−5.39%)
Sep 28, 2026
28d ago
Insider Cluster
BEARISH ★ 5/10
$118.18awaiting T+60—$111.46 (+5.68%)
Sep 23, 2026
4w ago
Insider Cluster
BEARISH ★ 4/10
$124.90awaiting T+60—$111.46 (+10.76%)
Sep 22, 2026
4w ago
Institutional Cluster
BULLISH ★ 4/10
$116.07awaiting T+60—$111.46 (−3.97%)
Sep 21, 2026
5w ago
Insider Cluster
BEARISH ★ 4/10
$116.07awaiting T+60—$111.46 (+3.97%)
Sep 16, 2026
5w ago
Insider Cluster
BEARISH ★ 5/10
$110.67awaiting T+60—$111.46 (−0.72%)
Sep 11, 2026
6w ago
Insider Cluster
NEUTRAL ★ 4/10
$100.82awaiting T+60—$111.46 (+10.56%)
Sep 11, 2026
6w ago
Insider Cluster
NEUTRAL ★ 3/10
$100.82awaiting T+60—$111.46 (+10.56%)
Aug 27, 2026
8w ago
Insider Cluster
NEUTRAL ★ 3/10
$93.24awaiting T+60—$111.46 (+19.55%)
Aug 27, 2026
8w ago
Insider Cluster
NEUTRAL ★ 2/10
$93.24awaiting T+60—$111.46 (+19.55%)
Showing 10 of 29

US Market Status

Market Closed — Opens Wed (10h 53m)

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Report published Jun 8, 2026