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NovaBridge Biosciences (NBP) SVP sells 3,494 shares after exercising RSUs

Filing Impact
(Neutral)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

NovaBridge Biosciences SVP, Clinical Development Xu Cong Claire reported a mix of derivative exercises and a small open‑market sale of company stock. On June 1, 2026, she sold 3,494 Ordinary Shares at an average price of $3.94 per share in an open‑market transaction. On May 30, 2026, she exercised derivative awards to acquire additional Ordinary Shares, including Restricted Share Units (RSUs) covering 4,079 Ordinary Shares. After these transactions, she directly owns 290,154 Ordinary Shares and 32,637 RSUs. Footnotes state that Ordinary Shares are represented by American Depositary Shares (ADSs), where each 10 ADSs represent 23 Ordinary Shares, and her reported holdings correspond to 126,154 ADSs.

Positive

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Negative

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Insider Xu Cong Claire
Role SVP, Clinical Development
Sold 3,494 shs ($14K)
Approx. gross sale proceeds $14K
Approx. exercise cost $0.00
Type Security Shares Price Value
Sale Ordinary Shares 3,494 $3.94 $14K
Exercise Restricted Share Units 4,079 $0.00 $0.00
Exercise Ordinary Shares 9,382 $0.00 $0.00
Holdings After Transaction: Restricted Share Units — 32,637 shares (Direct); Ordinary Shares — 290,154 shares (Direct)
Footnotes (9)
  1. F1. The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.
  2. F2. Reported securities are represented by 4,079 ADSs.
  3. F3. Each restricted stock unit ("RSU") represents a contingent right to receive one ADS.
  4. F4. Reported securities are represented by 127,673 ADSs.
  5. F5. Reported securities are represented by 1,519 ADSs.
  6. F6. Reported sales price represents the converted sales price of the ADSs of $1.71.
  7. F7. Reported securities are represented by 126,154 ADSs.
  8. F8. Reported securities represent ADSs.
  9. F9. On May 30, 2024, the Reporting Person was granted 65,270 RSUs. The RSUs vested or shall vest over four years, with one-fourth vesting on the first anniversary of the grant date and the balance vesting ratably over the subsequent 12 quarters on the 30th day of each third month.
Shares sold 3,494 Ordinary Shares Open‑market sale on June 1, 2026
Sale price $3.94 per share Average price for 3,494 Ordinary Shares sold
Shares after sale 290,154 Ordinary Shares Direct holdings following reported transactions
RSUs remaining 32,637 RSUs Restricted Share Units held after transactions
RSUs exercised 4,079 RSUs RSUs exercised as derivative awards on May 30, 2026
Initial RSU grant 65,270 RSUs Grant on May 30, 2024 vesting over four years
ADS to Ordinary ratio 10 ADSs = 23 Ordinary Shares Representation of Ordinary Shares by ADSs
ADS equivalent holdings 126,154 ADSs ADSs representing reported securities after transactions
Restricted Share Units financial
"The filing notes that on May 30, 2024, the Reporting Person was granted 65,270 RSUs."
Restricted share units (RSUs) are a promise from a company to give an employee or service provider actual shares or cash equal to the shares after certain conditions are met, typically staying with the company for a set time or hitting performance targets. Think of them like a time-locked gift card that becomes usable only after you’ve earned it. For investors, RSUs matter because they align employee incentives with company performance and can increase the number of shares outstanding over time, diluting existing ownership and affecting earnings per share.
American Depositary Shares financial
"The Ordinary Shares may be represented by American Depositary Shares ("ADS")."
American depositary shares (ADSs) are a way for investors in the United States to buy shares of foreign companies without dealing with international markets directly. They represent ownership in a foreign company's stock and are traded on U.S. stock exchanges, making it easier for American investors to buy, sell, and own parts of companies from around the world.
derivative security financial
"transaction_code_description: Exercise or conversion of derivative security"
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
open-market sale financial
"transaction_action: open-market sale"
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
contingent right financial
"Each restricted stock unit ("RSU") represents a contingent right to receive one ADS."

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

What insider transactions did NovaBridge Biosciences (NBP) report for Xu Cong Claire?
NovaBridge Biosciences reported that SVP Xu Cong Claire exercised derivative awards on May 30, 2026 and then sold 3,494 Ordinary Shares on June 1, 2026. The sale was an open‑market transaction at an average price of $3.94 per share.

How many NovaBridge Biosciences (NBP) shares did the insider sell and at what price?
Xu Cong Claire sold 3,494 Ordinary Shares of NovaBridge Biosciences at an average price of $3.94 per share. This open‑market sale followed recent derivative exercises that increased her Ordinary Share holdings before the sale.

What derivative awards did the NovaBridge Biosciences (NBP) executive exercise?
On May 30, 2026, Xu Cong Claire exercised derivative awards, including Restricted Share Units covering 4,079 Ordinary Shares. These exercises increased her direct equity exposure before she sold a smaller number of Ordinary Shares days later.

What are Xu Cong Claire’s holdings in NovaBridge Biosciences (NBP) after the transactions?
Following the reported transactions, Xu Cong Claire directly holds 290,154 Ordinary Shares and 32,637 Restricted Share Units. Footnotes state these positions are represented in American Depositary Shares equivalent to 126,154 ADSs based on the company’s ADS ratio.

What RSU grant history does the NovaBridge Biosciences (NBP) filing describe?
The filing notes that on May 30, 2024, Xu Cong Claire was granted 65,270 Restricted Share Units. These RSUs vest over four years, with one‑fourth on the first anniversary and the remainder vesting quarterly over the following 12 quarters.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Xu Cong Claire
(Last)(First)(Middle)
C/O NOVABRIDGE BIOSCIENCES
2440 RESEARCH BOULEVARD, SUITE 400
(Street)
ROCKVILLE MARYLAND 20850
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
NovaBridge Biosciences [ NBP ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
SVP, Clinical Development
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/30/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Ordinary Shares(1)05/30/2026M9,382(2)A(3)293,648(4)D
Ordinary Shares(1)06/01/2026S3,494(5)D$3.94(6)290,154(7)D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Share Units(3)05/30/2026M4,079(8) (9) (9)Ordinary Shares(1)4,079(8)$032,637(8)D
Explanation of Responses:
1. The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.
2. Reported securities are represented by 4,079 ADSs.
3. Each restricted stock unit ("RSU") represents a contingent right to receive one ADS.
4. Reported securities are represented by 127,673 ADSs.
5. Reported securities are represented by 1,519 ADSs.
6. Reported sales price represents the converted sales price of the ADSs of $1.71.
7. Reported securities are represented by 126,154 ADSs.
8. Reported securities represent ADSs.
9. On May 30, 2024, the Reporting Person was granted 65,270 RSUs. The RSUs vested or shall vest over four years, with one-fourth vesting on the first anniversary of the grant date and the balance vesting ratably over the subsequent 12 quarters on the 30th day of each third month.
/s/ Xi-Yong (Sean) Fu as attorney-in-fact06/02/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR