BOLD
BOUNDLESS BIO (BOLD)
NASDAQ
$2.42-$0.02 (-0.66%)
Price as of Oct 22, 2026 4:00 PM EDT
  • $56.4M
    Market Cap
  • 61.59%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
ARCH VENTURE MANAGEMENT, LLC
11.84%
2.7M
+2.7M (+100.00%)
Jun 30, 2026
FMR LLC
11.35%
2.6M
-114,400 (-4.43%)
Jun 30, 2026
TANG CAPITAL MANAGEMENT LLC
11.25%
2.6M
+2.6M (+100.00%)
Jun 30, 2026
ADAR1 CAPITAL MANAGEMENT, LLC
8.65%
2.0M
+2.0M (+100.00%)
Jun 30, 2026
BB BIOTECH AG
6.02%
1.4M
+600,200 (+43.82%)
Mar 31, 2019
NEXTECH INVEST LTD.
5.40%
1.2M
0 (0.00%)
Dec 31, 2024
CORMORANT ASSET MANAGEMENT, LP
4.40%
1.0M
+1.0M (+100.00%)
Jun 30, 2026

Current Ownership Distribution

  • Mutual Funds101.1M (54.31%)
  • Institutions80.6M (43.30%)
  • Insiders4.5M (2.39%)
  • Other0 (0.00%)

Insider Transactions

  • 2.39% (4.5M)
    Current InsiderOwnership (%, shares)
  • 1
    Number of InsiderBuying (last 12 months)
  • $130.2M
    Amount of InsiderBuying (last 12 months)
  • 2
    Number of InsiderSelling (last 12 months)
  • $8.4M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
TANG KEVIN C
Buy
Oct 20, 2026
$521.40
220
$2.37
3.0M
TANG KEVIN C
Buy
Oct 19, 2026
$29,928.60
12,790
$2.34
3.0M
TANG KEVIN C
Buy
Oct 19, 2026
$42,590.07
18,279
$2.33
3.0M
TANG KEVIN C
Buy
Oct 16, 2026
$276,552.90
118,185
$2.34
3.0M
TANG KEVIN C
Sell
Aug 26, 2026
$54,351.00
18,300
$2.97
2.8M
TANG KEVIN C
Buy
Jul 16, 2026
$45,118.04
18,491
$2.44
2.9M
TANG KEVIN C
Buy
Jul 15, 2026
$3,904.00
1,600
$2.44
2.8M
TANG KEVIN C
Buy
Jul 14, 2026
$106,623.54
43,878
$2.43
2.8M
TANG KEVIN C
Buy
Jul 08, 2026
$35,271.48
14,338
$2.46
2.7M
TANG KEVIN C
Buy
Jul 07, 2026
$39,208.80
15,810
$2.48
2.7M
TANG KEVIN C
Buy
Jul 06, 2026
$67,384.38
27,062
$2.49
2.7M
TANG KEVIN C
Buy
Jul 02, 2026
$24,454.29
9,821
$2.49
2.6M
CRANDELL KEITH
Exempt
Jul 01, 2026
$0.00
16,000
$0.00
0
TANG KEVIN C
Buy
Jul 01, 2026
$178,313.88
71,612
$2.49
2.6M
CRANDELL KEITH
Exempt
Jul 01, 2026
$16,480.00
16,000
$1.03
16,000
CRANDELL KEITH
Sell
Jul 01, 2026
$39,840.00
16,000
$2.49
0
TANG KEVIN C
Buy
Jun 30, 2026
$65,862.20
25,930
$2.54
2.6M
TANG KEVIN C
Buy
Jun 30, 2026
$250.00
100
$2.50
2.6M
TANG KEVIN C
Buy
Jun 29, 2026
$158,042.95
63,985
$2.47
2.5M
TANG KEVIN C
Buy
Jun 29, 2026
$1,926.96
777
$2.48
2.5M
TANG KEVIN C
Buy
Jun 26, 2026
$191,369.85
75,047
$2.55
2.5M
TANG KEVIN C
Buy
Jun 26, 2026
$340.36
134
$2.54
2.5M
TANG KEVIN C
Buy
Jun 25, 2026
$361,782.40
145,880
$2.48
2.4M
TANG KEVIN C
Buy
Jun 25, 2026
$1,305.60
510
$2.56
2.4M
Whiting Nancy
Award
Jun 15, 2026
$0.00
32,000
$0.00
32,000
Oien Jessica
See Remarks
Award
Jan 23, 2026
$0.00
220,000
$0.00
220,000
Hassig Christian
Chief Scientific Officer
Award
Jan 23, 2026
$0.00
230,000
$0.00
230,000
HINKLE DAVID A
See Remarks
Award
Jan 23, 2026
$0.00
140,000
$0.00
140,000
Doebele Robert
Chief Medical Officer
Award
Jan 23, 2026
$0.00
230,000
$0.00
230,000
Brennan Christine
Award
Jun 23, 2025
$0.00
16,000
$0.00
16,000