System1 Group PLC Cements Strategic Link with Brave Bison Through New Relationship Agreement

System1 formalises ties with Brave Bison after 27.85% stake

System1 Group PLC (AIM: SYS1) has signed a relationship agreement with Brave Bison Group plc following Brave Bison’s purchase of a 27.85 per cent shareholding in the company on 2 March 2026. This is a classic governance move when a single investor takes a large minority stake – set ground rules, define access, and protect independence.

The headline: Brave Bison can appoint an observer to System1’s board, subject to board approval, while agreeing not to interfere with the board’s independence or System1’s regulatory obligations. All dealings between the two must be at arm’s length, with strict confidentiality baked in. The agreement falls away if Brave Bison’s holding drops below 17.5 per cent of voting rights.

What the relationship agreement actually says

Board observer – access without control

Brave Bison gets the right to appoint an observer to attend System1 board meetings, provided the board agrees to the specific individual. An observer is not a director – no voting rights, no legal responsibility for board decisions – but they can listen, ask questions when invited, and gain insight into strategy and performance. It’s a seat in the room, not a hand on the steering wheel.

Governance commitments that safeguard independence

Brave Bison has committed not to take any action that would stop the System1 board from operating independently. That matters because big shareholders can sometimes exert pressure behind the scenes. Here, the framework is explicit: executive decision-making remains with System1’s board and management.

Compliance with market rules is front and centre

The agreement confirms Brave Bison won’t do anything that prevents System1 from complying with applicable rules, including the AIM Rules for Companies, the UK Market Abuse Regulation (UK MAR), and the Quoted Companies Alliance (QCA) Corporate Governance Code. In short: transparency, proper disclosure, and good governance are non-negotiable.

Arm’s-length dealings and confidentiality

Any transaction or ongoing dealing between System1 and Brave Bison (or their associates) must be on arm’s-length terms and a normal commercial basis – the same standard you’d expect between unrelated parties. There are also clear rules on what information System1 can provide and how confidential information is protected.

When does it end? The 17.5% threshold

The agreement terminates if Brave Bison and its associates drop below 17.5 per cent of System1’s voting rights. That threshold acknowledges Brave Bison’s current 27.85 per cent position, while ensuring this special framework only applies while they remain a significant shareholder.

Why this matters for System1 shareholders

There are two things investors usually want to know in this situation: will a big new shareholder try to take over the strategy, and could related-party dealings skew value? This agreement addresses both concerns. System1’s board keeps control, and any interactions must be at market-standard terms, with oversight and confidentiality in place.

Practically, a board observer can speed up understanding between shareholder and company. Brave Bison will hear strategy first-hand, and management can field questions directly. That can reduce friction and, at best, align expectations. But the non-voting status keeps accountability where it belongs – with the directors.

The RNS also states this announcement contained inside information, which is now in the public domain. That signals the company views the agreement as material to how the business is governed and potentially perceived by the market.

What I like – and what to watch

Positives

• Clear governance lines: Independence of the board is protected in black and white.
• Regulatory hygiene: Explicit commitment to AIM Rules, UK MAR and the QCA Code provides comfort on market conduct and disclosure.
• Commercial fairness: Arm’s-length terms reduce the risk of value leakage through related-party transactions.
• Constructive tone: Both chairs – Rupert Howell for System1 and Oliver Green for Brave Bison – emphasise a positive, transparent relationship.

Potential risks

• Influence by proximity: Even without a vote, a regular presence in board meetings can shape discussions. The board’s approval right over the observer is a useful control.
• Information handling: Greater information flow to a major shareholder raises sensitivity; the confidentiality provisions will need to be strictly observed.
• Strategic friction: If visions diverge, disagreements could surface. The framework exists to manage that, but it cannot eliminate it.

Key facts at a glance

Announcement date	21 April 2026
Major shareholder	Brave Bison Group plc
Shareholding in System1	27.85 per cent
Board access	Right to appoint a board observer, subject to board approval
Independence commitment	Brave Bison will not act to prevent the board operating independently
Regulatory compliance	AIM Rules for Companies, UK Market Abuse Regulation, QCA Corporate Governance Code
Related dealings	Arm’s-length terms and normal commercial basis
Confidentiality	Information sharing governed; confidentiality protections in place
Termination trigger	Holding falls below 17.5 per cent of voting rights

Quotes worth noting

Rupert Howell, Non-Executive Chair of System1

“The Board of System1 is committed to acting in the interests of all its shareholders and we welcome Brave Bison as a significant shareholder in the Company. After careful consideration, and in line with its robust governance practices, the Board concluded it to be in the best interests of all shareholders and stakeholders to enter into a suitable agreement with Brave Bison, fostering a constructive and transparent relationship.”

Oliver Green, Chairman of Brave Bison

“We are pleased to formalise our relationship with System1, and we look forward to working constructively with the Board and management team.”

What this could mean for the road ahead

System1 is a marketing decision-making platform used by major global brands. The new arrangement doesn’t change the business model or disclose any new commercial tie-ups with Brave Bison – none are stated. What it does do is set a governance baseline as both sides navigate a significant shareholding with better visibility and fewer surprises.

For shareholders, the message is stability with oversight. For management, it’s the chance to bring a major investor closer without ceding control. That balance is usually well received by markets when properly executed. The proof will come in how smoothly information is shared, how conflicts are avoided, and whether the observer relationship adds useful challenge without distraction.

My watchlist from here

• Who is appointed as the board observer and when – appointment is subject to board approval and not yet disclosed.
• Any future RNS referencing related-party transactions between System1 and Brave Bison – these must be arm’s length.
• Whether Brave Bison’s holding changes, especially relative to the 17.5 per cent termination threshold.
• Evidence of enhanced strategic clarity or execution updates from System1 as the relationship beds in.

Overall view: a sensible, shareholder-friendly structure that acknowledges Brave Bison’s 27.85 per cent stake while keeping System1’s board firmly in charge. It’s governance housekeeping done properly – now the focus returns to operating performance.