Key facts
- This page summarizes Hugh Griffith's Form 3 filing for NuCana plc (NCNA).
- 0 reported transactions and 6 derivative rows are listed below.
- Accepted by SEC: 18 Mar 2026, 17:25.
Hugh Griffith - 18 Mar 2026 Form 3 Insider Report for NuCana plc (NCNA)
- Reporting relationship
- Chief Executive Officer, Director
- Issuer ticker
- NCNA
- Reported as of
- 18 Mar 2026
- Net transaction value
- $0
- Reporting owner signature
- /s/ Ian Webster, Attorney-in-Fact for Hugh Griffith
Source evidence
Original filing metadata and source links for verification.
3 source fields
Reporting owner
1 detail
Key filing fact
Hugh Griffith filed Form 3 for NuCana plc (NCNA) on 18 Mar 2026.
Change
- No earlier filing in this sequence is available for direct comparison.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Official SEC source
View source filing
Ownership activity is grounded in SEC Form 3 disclosures.
Reporting Owners (1)
CIK 0001296964
Primary reporting owner
Griffith Hugh
- Relationship
- Chief Executive Officer, Director
- Address
- C/O NUCANA PLC, 3 LOCHSIDE WAY, EDINBURGH, UNITED KINGDOM
- Signature
- /s/ Ian Webster, Attorney-in-Fact for Hugh Griffith
- Signature date
- 18 Mar 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
NCNA
holding
Ordinary Shares
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 1,000,000
- Date
- 18 Mar 2026
- Ownership
- Direct
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
NCNA
holding
Derivative
American Depositary Shares
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- Date
- 18 Mar 2026
- Ownership
- Direct
- Underlying class
- Ordinary Shares
- Underlying amount
- 52
- Exercise price
- Footnotes
- F1
NCNA
holding
Derivative
Options
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- Date
- 18 Mar 2026
- Ownership
- Direct
- Underlying class
- Ordinary Shares
- Underlying amount
- 62,499,995
- Exercise price
- Footnotes
- F2
NCNA
holding
Derivative
Options
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- Date
- 18 Mar 2026
- Ownership
- Direct
- Underlying class
- Ordinary Shares
- Underlying amount
- 1,221,867,885
- Exercise price
- Footnotes
- F3
NCNA
holding
Derivative
Options
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- Date
- 18 Mar 2026
- Ownership
- Direct
- Underlying class
- Ordinary Shares
- Underlying amount
- 1,544,328,984
- Exercise price
- Footnotes
- F4
NCNA
holding
Derivative
Options
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- Date
- 18 Mar 2026
- Ownership
- Direct
- Underlying class
- Ordinary Shares
- Underlying amount
- 691,582,704
- Exercise price
- Footnotes
- F5
NCNA
holding
Derivative
Options
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- Date
- 18 Mar 2026
- Ownership
- Direct
- Underlying class
- Ordinary Shares
- Underlying amount
- 831,561,761
- Exercise price
- Footnotes
- F6
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 6 footnotes
Footnote F1
Each American Depositary Share ("ADS") represents 5,000 ordinary shares, nominal value 0.0004 Pounds Sterling per share (the "Ordinary Shares"), of NuCana plc (the "Company"). ADSs have no expiration date.
Footnote F2
The Ordinary Shares underlying this option have an exercise price of 0.004 Pounds Sterling, completed vesting on June 20, 2025 and expire June 20, 2035.
Footnote F3
The Ordinary Shares underlying this option have an exercise price of 0.0004 Pounds Sterling, completed vesting on June 20, 2025 and expire June 20, 2035.
Footnote F4
The Ordinary Shares underlying this option have an exercise price of 0.0004 Pounds Sterling, completed vesting on January 14, 2026 and expire January 14, 2036.
Footnote F5
The Ordinary Shares underlying this option have an exercise price of 0.0004 Pounds Sterling and will vest as to 25% on June 20, 2026, with the remainder vesting in three equal annual installments thereafter, subject to the Reporting Person's continued service with the Company through the applicable vesting date.
Footnote F6
The Ordinary Shares underlying this option have an exercise price of 0.0004 Pounds Sterling and will vest as to 25% on January 14, 2027, with the remainder vesting in three equal annual installments thereafter, subject to the Reporting Person's continued service with the Company through the applicable vesting date.
SEC remarks
Exhibit 24.1 - Power of Attorney