FMR LLC files Amendment No. 4 to a Schedule 13G/A reporting ownership of 1,800 shares of Centessa Pharmaceuticals plc common stock. The filing lists the CUSIP 152309100, shows 1,800 shares beneficially owned representing 0.0% of the class, and names Abigail P. Johnson in the cover responses. Signatures are dated 07/07/2026.
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Negative
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Insights
FMR LLC reports a de minimis stake of 1,800 shares in Centessa (0.0% of class).
Filing details are administrative: a Schedule 13G/A amendment showing beneficial ownership of 1,800 shares and identifying the filing parties, including Abigail P. Johnson. The CUSIP 152309100 and signature dates are provided.
Such small reported holdings typically do not signal a change in investment intent. Subsequent filings would show any material position changes or disclosures tied to larger ownership.
Key Figures
Shares reported beneficially owned:1,800 sharesPercent of class:0.0%CUSIP:152309100+2 more
Percent of class0.0%Reported on the cover responses
CUSIP152309100Centessa Pharmaceuticals plc common stock
Reporting/reference date06/30/2026Cover page date shown in metadata
Signature date07/07/2026Signed by authorized representative
Key Terms
Schedule 13G/A, beneficially owned, 13d-1(k)(1) agreement, power of attorney
4 terms
Schedule 13G/Aregulatory
"Amendment No. 4 to Schedule 13G/A reporting beneficial ownership"
A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.
beneficially ownedregulatory
"Amount beneficially owned: 1800.00 (b) Percent of class: 0.0 %"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
13d-1(k)(1) agreementregulatory
"Please see Exhibit 99 for 13d-1(k)(1) agreement"
power of attorneyother
"Power of Attorney effective as of April 13, 2026"
A power of attorney is a legal document that allows one person to make decisions and act on behalf of another person, often in financial or legal matters. It’s like giving someone a trusted helper or agent the authority to handle important tasks if you are unable to do so yourself. This matters to investors because it can impact how their assets are managed or transferred if they become unable to oversee their affairs.
FAQ
What does FMR LLC report for CNTA ownership?
FMR LLC reports beneficial ownership of 1,800 shares of Centessa common stock. The filing states this equals 0.0% of the class and uses CUSIP 152309100, with signatures dated 07/07/2026.
Who is listed alongside FMR LLC on the Schedule 13G/A for CNTA?
Abigail P. Johnson is named on the cover responses. The filing shows voting and dispositive power entries tied to FMR LLC and references a power of attorney effective April 13, 2026, incorporated by reference.
Is the reported stake by FMR LLC considered over 5% for Centessa (CNTA)?
No. The filing explicitly states the holder's interest is for ownership of 5 percent or less of the class. The reported amount is 1,800 shares, which the filing lists as 0.0% of the outstanding common stock.
What exhibits or agreements are referenced in the Schedule 13G/A amendment?
The amendment references Exhibit 99 for a 13d-1(k)(1) agreement and incorporates a power of attorney by reference to an earlier filing. Exhibit cross-references are included in the cover information.
When was the Schedule 13G/A amendment signed for Centessa (CNTA)?
Signatures on the amendment are dated 07/07/2026. The cover page also lists an apparent reporting date of 06/30/2026 for the filing metadata and references a power of attorney effective 04/13/2026.
Address or principal business office or, if none, residence:
245 Summer Street, Boston, Massachusetts 02210
(c)
Citizenship:
Not applicable
(d)
Title of class of securities:
COMMON STOCK
(e)
CUSIP No.:
152309100
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
1800.00
(b)
Percent of class:
0.0 %
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
Please see the responses to Items 5 and 6 on the cover page.
(ii) Shared power to vote or to direct the vote:
0.00
(iii) Sole power to dispose or to direct the disposition of:
1800.00
(iv) Shared power to dispose or to direct the disposition of:
0.00
Item 5.
Ownership of 5 Percent or Less of a Class.
Ownership of 5 percent or less of a class
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
One or more other persons are known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the COMMON STOCK of CENTESSA PHARMACEUTICALS PLC. No one other person's interest in the COMMON STOCK of CENTESSA PHARMACEUTICALS PLC is more than five percent of the total outstanding COMMON STOCK.
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
See attached Exhibit 99.
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
FMR LLC
Signature:
Richard Bourgelas
Name/Title:
Duly authorized under Power of Attorney effective as of April 13, 2026, by and on behalf of FMR LLC and its direct and indirect subsidiaries*
Date:
07/07/2026
Abigail P. Johnson
Signature:
Richard Bourgelas
Name/Title:
Duly authorized under Power of Attorney effective as of April 13, 2026, by and on behalf of Abigail P. Johnson*
Date:
07/07/2026
Comments accompanying signature: *This power of attorney is incorporated herein by reference to Exhibit 24 to the Schedule 13G filed by FMR LLC on April 29,2026, accession number: 0000315066-26-000738.
