NovaBridge Biosciences NBP Insider Ownership

NASDAQ NBP
$1.38 -0.05 (-3.52%)
As of: Oct 21, 2026 · 1:21 PM EDT

Insider Holdings by Owner

1.00Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
1.04%
▲+0.290% pp QoQ
Shares Held by Insiders
991.31K
filed for Sep 2026
▲+39.00% QoQ
Shares Outstanding
95.76Mn
95,764,753 shares
Direct Holdings
991.31K
Indirect: 0
Net Shares Traded (QoQ)
+278.15K
net buying in Sep 2026
Insiders Holding Shares
6
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 —

Insider Ownership Summary

Over the past 12 months, NovaBridge Biosciences insiders bought $577,300 of stock on the open market (230K shares) and sold $154,273 (157.34K shares).

Form 4 Holdings

Insiders Holding NBP

Insiders 6
Shares held 1.00Mn
Of outstanding 1.05%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Cong Claire Xu Evp, Clinical Development 304,201 0 304,201 30.3% 01 Sep, 2026
2 Sean Wuxiong Cao Chief Bus. Development Officer 266,467 0 266,467 26.5% 11 Sep, 2026
3 Mark Arnold Hagler Officer 230,000 0 230,000 22.9% 28 Apr, 2026
4 Phillip Andrew Dennis Chief Medical Officer 173,427 0 173,427 17.3% 21 Sep, 2026
5 Robert A. Lenz Director 17,218 0 17,218 1.7% 25 Aug, 2026
6 Ian Ying Woo Director 13,271 0 13,271 1.3% 19 Oct, 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

35 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
15 Oct, 2026 Ian Ying Woo Director Acquired M 13,271 — — 13,271 Direct
15 Oct, 2026 Ian Ying Woo Director Disposed M 5,770 $0.00 $0 11,540 Direct
17 Sep, 2026 Phillip Andrew Dennis Chief Medical Officer Acquired M 23,695 — — 181,636 Direct
18 Sep, 2026 Phillip Andrew Dennis Chief Medical Officer Disposed S 8,209 $0.71 $5.83K 173,427 Direct
17 Sep, 2026 Phillip Andrew Dennis Chief Medical Officer Disposed M 10,302 $0.00 $0 72,120 Direct
09 Sep, 2026 Sean Wuxiong Cao Chief Bus. Development Officer Disposed S 107,978 $0.74 $79.90K 266,467 Direct
03 Sep, 2026 Sean Wuxiong Cao Chief Bus. Development Officer Acquired M 235,136 — — 270,209 Direct
03 Sep, 2026 Sean Wuxiong Cao Chief Bus. Development Officer Acquired M 104,236 — — 374,445 Direct
03 Sep, 2026 Sean Wuxiong Cao Chief Bus. Development Officer Disposed M 102,233 $0.00 $0 306,700 Direct
03 Sep, 2026 Sean Wuxiong Cao Chief Bus. Development Officer Disposed M 45,320 $0.00 $0 135,960 Direct
30 Aug, 2026 Cong Claire Xu Evp, Clinical Development Acquired M 9,382 — — 307,483 Direct
31 Aug, 2026 Cong Claire Xu Evp, Clinical Development Disposed S 3,282 $0.79 $2.59K 304,201 Direct
30 Aug, 2026 Cong Claire Xu Evp, Clinical Development Disposed M 4,079 $0.00 $0 28,558 Direct
22 Aug, 2026 Robert A. Lenz Director Acquired M 17,218 — — 17,218 Direct
22 Aug, 2026 Robert A. Lenz Director Disposed M 7,486 $0.00 $0 14,974 Direct
08 Jul, 2026 Mark Arnold Hagler Chief Commercial Officer Acquired A 949,050 $0.00 $0 949,050 Direct
08 Jul, 2026 Liwei Lorraine Lin General Counsel Acquired A 254,780 $0.00 $0 254,780 Direct
06 Jul, 2026 Srishti Gupta Chief Executive Officer Acquired A 3,000,000 $0.00 $0 3,000,000 Direct
04 Jul, 2026 Cong Claire Xu Svp, Clinical Development Acquired M 12,432 — — 302,586 Direct
06 Jul, 2026 Cong Claire Xu Svp, Clinical Development Disposed S 4,485 $0.89 $3.99K 298,101 Direct