Hagler Mark Arnold 4

What Happened

• Mark Arnold Hagler, President and Chief Commercial Officer of NovaBridge Biosciences (NBP), purchased 230,000 ordinary shares (reported as 100,000 American Depositary Shares, or ADSs) on April 24, 2026. The filing shows a weighted-average price of $2.51 per ordinary share and an aggregate purchase value of $577,300. The ADS purchases were made in multiple transactions at prices in the $2.44–$2.54 range.

Key Details

• Transaction date: 2026-04-24 (filed with the SEC on 2026-04-28; filing is within the usual two business-day window)
• Shares bought: 230,000 ordinary shares, represented by 100,000 ADSs
• Price: weighted-average $2.51 per ordinary share; ADS trades ranged $2.44–$2.54 (multiple trades)
• Total value: $577,300
• Shares owned after the transaction: not specified in the provided excerpt of the filing
• Footnotes of note: (F1) 10 ADSs = 23 ordinary shares; (F2) reported securities = 100,000 ADSs (equals 230,000 ordinary shares); (F3) weighted-average price and multiple trade prices available on request

Context

• The purchase was an outright buy (Transaction code P), which retail investors often view as a more informative signal than routine sales because insiders are adding to holdings. The filing notes the ADS/ordinary-share conversion ratio and that the reported price is a weighted average across several ADS purchases; Hagler has offered to provide a per-trade price breakdown on request.