🧾 What This Document Is

This is a DEFA14A, or "Definitive Additional Materials" filing. Think of it as an update or supplement to a main proxy statement. Companies file these to add new information, correct something, or respond to questions after the original proxy has been sent to shareholders.

👉 Why it matters: It’s not the main vote document, but it contains important updates shareholders need to know before making a decision. This specific update points investors to a new website with information about a major company transaction.

🏢 What The Company Does

Janus Henderson Group (JHG) is a global asset manager. In simple terms, they manage investments—like stocks and bonds—for individuals and institutions. They make money primarily by charging fees on the money they manage (its "assets under management" or AUM).

👉 Why it matters: As a publicly-traded company itself, any major corporate action, like the one hinted at in this filing, directly impacts its investors and the structure of the business.

🤝 The Deal & Key Moves

This filing is all about a major proposed transaction for Janus Henderson. While the exact details aren't in this update, it references critical documents that contain them:

• A Proxy Statement (filed around March 12, 2026).
• A Schedule 13E-3 (first filed March 11, 2026, and amended as recently as March 30, 2026).

The Schedule 13E-3 is a key clue. This form is typically used for "going-private" transactions or other major restructurings where a company's existing shareholders are being bought out or the company's ownership is fundamentally changing.

👉 Why it matters: The company is in the middle of a significant transformation. This filing's main job is to direct investors to the updated information hub for this deal.

🔍 The Details: The New Website

The core action in this supplemental filing is an update to a dedicated transaction website:

• Website: https://pathforward.janushenderson.com/
• Last Updated: March 30, 2026

This site is designed to be a central place for shareholders to find all relevant information, presentations, and timelines about the proposed transaction.

👉 Why it matters: It’s the company’s primary channel for communicating the "path forward" to its investors during this complex process.

📅 Key Dates & Next Steps

The filing outlines a clear process flow for investors:

1. Past: Original proxy statement filed on/about March 12, 2026.
2. Recent: Supplemental materials (this filing) posted on March 27, 2026.
3. Ongoing: The company may file additional amendments to the proxy or the Schedule 13E-3.
4. Action Required: Shareholders are urged to read all filed documents carefully.

👉 Why it matters: This is a live, evolving process. Investors must stay informed by checking the SEC website or Janus Henderson’s investor relations page for the latest versions of the deal documents.

⚖️ Big Picture: Strengths & Risks

• 👍 Strength (Process): The company is following proper regulatory procedure by filing updates and creating a dedicated information site, which promotes transparency.
• ⚠️ Risk (Complexity): Transactions involving a Schedule 13E-3 are inherently complex and can create uncertainty for investors until the deal is finalized or voted upon.

🧠 The Analogy

Imagine your favorite sports team announces a major stadium renovation and move to a new city. This filing is like the team releasing a link to a new project website after the initial announcement. It’s not the architectural plans (the proxy statement) or the legal land deals (the Schedule 13E-3), but it’s the team’s update saying, "Here’s where you can now find all the blueprints, timelines, and answers to your questions about the move."

📇 Key Contacts & People

The filing does not list individual names, titles, or contact information for executives. For shareholder inquiries, the document directs investors to these official channels:

• SEC Website: https://www.sec.gov
• Janus Henderson Investor Relations: https://ir.janushenderson.com
• Dedicated Transaction Website: https://pathforward.janushenderson.com/

🧩 Final Takeaway

Janus Henderson is in the midst of a major corporate transaction, likely a restructuring or buyout. This specific filing is a procedural update, notifying shareholders that a new information website has been updated on March 30, 2026, and reminding them to review all official SEC filings for critical details before voting.