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NBP

NovaBridge Biosciences (NBP) stock: insider trades, news & valuation

Net buying
Close · Oct 9, 2026 $1.40 +1.8% on the day -71.2% over 12 months 52-week range $1.34 – $6.56

Share price and insider trades

NBP closeInsider buyInsider sale
02468NovDecJan 2026FebMarAprMayJunJulAugSepOctSold $2,593 on 2026-08-31 · Cong Claire XuSold $3,992 on 2026-07-06 · Cong Claire XuSold $5,606 on 2026-06-18 · Phillip Andrew DennisSold $5,828 on 2026-09-18 · Phillip Andrew DennisSold $13,766 on 2026-06-01 · Cong Claire XuSold $42,584 on 2026-05-14 · Sean Wuxiong CaoSold $79,904 on 2026-09-09 · Sean Wuxiong CaoBought $577,300 on 2026-04-24 · Mark Arnold Hagler
Bought, 12 months$577K
Sold, 12 months$154K
Insiders buying1
Insiders selling3

NovaBridge Biosciences insider trading at a glance (Oct 9, 2026): in the past 12 months, 1 insider bought $577K and 3 sold $154K of NBP stock on the open market.

NBP insider buying and selling by quarter

Open-market purchases (green, above the line) and sales (red, below), by trade date.

Q2 2026: $577K bought (1 trades)$577KQ2 2026: $62K sold (3 trades)Q2 2026Q3 2026: $92K sold (4 trades)Q3 2026Q4 2026
QuarterBoughtPurchasesSoldSales
Q4 2026—0—0
Q3 2026—0$92K4
Q2 2026$577K1$62K3

Valuation, profit and volume

P/E (trailing)n/aSector median —
Market value— 
Profit margin—Revenue growth —
Volume vs. 50-day0.7×Last 5 sessions
Insiders' paper profit−$256KOn all tracked purchases -44.4%

Summary

Over the past 12 months, 1 NovaBridge Biosciences insider reported open-market purchases totaling $577K, while 3 insiders reported sales totaling $154K. 0 of 7 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.

Insider transactions

Open-market purchases and sales.

Filed Insider Type Shares Price Value Since Score
Sep 21SEC Phillip Andrew DennisChief Medical Officer Sell 8,209173,427 held (−5%) $0.71 $6K +96.5% —
Sep 11SEC Sean Wuxiong CaoChief Bus. Development Officer Sell 107,978266,467 held (−29%) $0.74 $80K +88.5% —
Sep 1SEC Cong Claire XuEvp, Clinical Development Sell 3,282304,201 held (−1%) $0.79 $3K +76.6% —
Jul 7SEC Cong Claire XuSvp, Clinical Development Sell 4,485298,101 held (−1%) $0.89 $4K +56.7% —
Jun 22SEC Phillip Andrew DennisChief Medical Officer Sell 8,494157,941 held (−5%) $0.66 $6K +111.4% —
Jun 2SEC Cong Claire XuSvp, Clinical Development Sell 3,494290,154 held (−1%) $3.94 $14K -64.6% —
May 18SEC Sean Wuxiong CaoSee Remarks Sell 21,39935,073 held (−38%) $1.99 $43K -29.9% —
Apr 28SEC Mark Arnold HaglerSee Remarks Buy 230,000new position $2.51 $577K -44.4% —

Insiders at NovaBridge Biosciences

InsiderBoughtSoldLast filingScore
Mark Arnold HaglerSee Remarks $577K — Apr 28, 2026 —
Sean Wuxiong CaoChief Bus. Development Officer — $122K Sep 11, 2026 —
Cong Claire XuEvp, Clinical Development — $20K Sep 1, 2026 —
Phillip Andrew DennisChief Medical Officer — $11K Sep 21, 2026 —

NBP stock: common questions

Are NovaBridge Biosciences insiders buying NBP stock?

In the past 12 months, 1 insiders reported open-market purchases of NBP worth $577K. The latest was See Remarks Mark Arnold Hagler bought $577K of NBP at $2.51 — first open-market purchase in our records; opens a new position.

Are NovaBridge Biosciences insiders selling NBP stock?

3 insiders reported sales worth $154K over the same period.

Where does this data come from?

Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.

What is NBP's 52-week range?

Over the past year NBP has traded between $1.34 and $6.56. It last closed at $1.40 on Oct 9, 2026.