MaxCyte, Inc. (MXCT) holder River Global shifts 4.3% voting stake

Rhea-AI Filing Summary

River Global Investors LLP reports beneficial ownership of 834,100.00 MaxCyte, Inc. shares, representing 0.7786% of the company’s equity, with sole voting and dispositive power over this stake as of July 31, 2026.

This position follows an extraordinary corporate transaction in which the FCA approved the change in control and proposed acquisition of River Global Holdings Limited. After this approval, Liontrust Investment Partners LLP assumed responsibility for the River Global Investors ICVC and ICAV funds, and voting rights attached to approximately 4.3% of MaxCyte shares transferred from River Global Investors to Liontrust. Approximately 0.8% voting rights remain with River Global Investors and will be transferred at a later stage.

Key Figures

Shares beneficially owned: 834,100.00 shares Percent of class owned: 0.7786% Sole voting power: 834,100.00 shares +4 more

7 metrics

Shares beneficially owned 834,100.00 shares River Global Investors LLP holding as of 07/31/2026

Percent of class owned 0.7786% Equity stake in MaxCyte, Inc. corresponding to 834,100.00 shares

Sole voting power 834,100.00 shares Shares over which River Global Investors LLP has sole voting power

Voting rights transferred 4.3 % Approximate MaxCyte voting rights moved from RGI LLP to LIP LLP

Remaining voting rights 0.8 % Approximate MaxCyte voting rights still held by River Global Investors LLP

Buy trade on 05/20/2026 14,000 shares Shares bought at 1.0443 on 05/20/2026

Sell trade on 07/23/2026 100,000 shares Shares sold at 1.1022 on 07/23/2026

Key Terms

beneficially owned, Sole Voting Power, Sole Dispositive Power, extraordinary corporate transaction, +1 more

5 terms

beneficially owned financial

"Aggregate amount beneficially owned by each reporting person"

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.

Sole Voting Power financial

"Number of Shares Beneficially Owned by Each Reporting Person With: Sole Voting Power"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

Sole Dispositive Power financial

"Number of Shares Beneficially Owned by Each Reporting Person With: Sole Dispositive Power"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

extraordinary corporate transaction regulatory

"(b) An extraordinary corporate transaction, such as a merger, reorganization or liquidation"

change in control regulatory

"the FCA has approved the change in control and proposed acquisition"

A "change in control" occurs when the ownership or management of a company shifts significantly, such as through a merger, acquisition, or sale of a large part of its assets. This change can impact how the company is run and may influence its future direction. For investors, it matters because it can affect the company's stability, strategy, and value, often signaling potential changes in investment risk or opportunity.

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

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Available on EDGAR 08/04/2026 - 08:43 AM Accepted by SEC EDGAR 08/04/2026 - 08:42 AM Learn about SEC filing dates

FAQ

How many MaxCyte (MXCT) shares does River Global Investors LLP currently hold?

River Global Investors LLP holds 834,100.00 MaxCyte shares, representing 0.7786% of the equity, with sole voting and dispositive power over this stake as of July 31, 2026.

What percentage of MaxCyte (MXCT) is owned by River Global Investors after the transaction?

River Global Investors LLP owns 0.7786% of MaxCyte’s equity, corresponding to 834,100.00 shares. This reflects its remaining voting rights after a larger portion was transferred to Liontrust Investment Partners LLP.

What corporate transaction affected River Global’s MaxCyte (MXCT) voting rights?

An extraordinary corporate transaction occurred after the FCA approved the change in control and proposed acquisition of River Global Holdings Limited. Following this, Liontrust Investment Partners LLP assumed certain funds, prompting a transfer of MaxCyte voting rights.

How many MaxCyte (MXCT) voting rights were transferred to Liontrust Investment Partners LLP?

Voting rights attached to approximately 4.3% of MaxCyte shares were transferred from River Global Investors LLP to Liontrust Investment Partners LLP. Around 0.8% voting rights remain with River Global Investors to be transferred later.

What MaxCyte (MXCT) trading activity did River Global Investors report for 2026?

Reported trades include a BUY of 14,000 shares at 1.0443 on May 20, 2026 and multiple SELL transactions, such as 100,000 shares at 1.1022 on July 23, 2026 and 275,200 shares at 1.0397 on July 27, 2026.

When did the change in River Global’s MaxCyte (MXCT) position take effect?

The relevant change is tied to July 31, 2026, identified as the date of the event requiring the Schedule 13D statement, following the FCA-approved change in control and the transfer of voting rights to Liontrust Investment Partners LLP.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

MAXCYTE, INC.

(Name of Issuer)

Equity

(Title of Class of Securities)

57777K106

(CUSIP Number)

Nusayhah Ghaboos
30 Coleman Street,
London, X0, EC2R 5AL
0203 908 8791

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

07/31/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

schemaVersion:

SCHEDULE 13D

CUSIP Number(s): 57777K106

1

Name of reporting person

RIVER GLOBAL INVESTORS LLP

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED KINGDOM

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 834,100.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 834,100.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

834,100.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.8 %

14

Type of Reporting Person (See Instructions)

IV

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Equity
(b)	Name of Issuer: MAXCYTE, INC.
(c)	Address of Issuer's Principal Executive Offices: 9713 KEY WEST AVENUE,, SUITE 400, ROCKVILLE, MARYLAND , 20850.
Item 2.	Identity and Background
(a)	River Global Investors LLP
(b)	30 Coleman Street, London, EC2R 5AL, United Kingdom
(c)	Investment Firm 30 Coleman Street, London, EC2R 5AL, United Kingdom
(d)	No
(e)	No
(f)	United Kingdom
Item 3.	Source and Amount of Funds or Other Consideration
	N/A
Item 4.	Purpose of Transaction
	(b) An extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the issuer or any of its subsidiaries. As per the Announcement on 24 June 2026 (RNS Number: 4421J), the FCA has approved the change in control and proposed acquisition of River Global Holdings Limited. Subsequently, as of close of business on 31 July 2026, Liontrust Investment Partners (LIP) LLP assumed responsibility for the River Global Investors (RGI) LLP ICVC and ICAV funds. The relevant voting rights (approx 4.3%) attached to those holdings have therefore transferred from RGI LLP to LIP LLP. The remaining voting rights (approx 0.8%) continue to be held by RGI LLP and will be transferred at a later stage.
Item 5.	Interest in Securities of the Issuer
(a)	834,100.00 0.7786%
(b)	834,100.00 shares
(c)	As of Date B/S Amount Price 05/20/2026 BUY 14000 1.0443 06/16/2026 SELL 22320 1.13 07/23/2026 SELL 100000 1.1022 07/24/2026 SELL 100000 1.0873 07/27/2026 BUY 19780 1.0738 07/27/2026 SELL 275200 1.0397 07/28/2026 SELL 85400 0.9879 07/28/2026 SELL 239400 0.9978 07/29/2026 SELL 5547 1.015 07/29/2026 SELL 269453 1.0201
(d)	N/A
(e)	07/31/2026
Item 6.	Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer
	N/A
Item 7.	Material to be Filed as Exhibits.
	N/A

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.

RIVER GLOBAL INVESTORS LLP

Signature:	Nusayhah Ghaboos
Name/Title:	Regulatory Oversight Manager
Date:	08/04/2026