📄 What This Document Is

This is a Form 425 filing with the SEC. Think of it as a public disclosure of communication related to a major business deal. In this case, Penumbra is letting the world know it's sending final voting reminders to its shareholders about the planned merger with Boston Scientific. The company must file these letters publicly to ensure transparency.

🏢 The Big Picture: The Merger

Penumbra, a medical device company, is being acquired by Boston Scientific, a giant in the same industry. This filing is part of the final legal steps to get shareholder approval for the deal. The merger was announced earlier, and now it's time for the official vote.

📬 The Two Voting Reminders

This filing contains two nearly identical reminder letters sent to Penumbra shareholders who haven't yet voted.

First Letter (April 23, 2026): It's a "second reminder" that the Special Meeting for the vote is coming up on May 6, 2026. It stresses that the Board unanimously recommends a "FOR" vote and warns that not voting has the same effect as voting "against."
Second Letter (Planned for April 29, 2026): This is a "third and final" reminder, noting the meeting is "fast approaching." It repeats the same urgent call to action.

👉 Key Takeaway: Both letters scream "YOUR VOTE IS IMPORTANT." The message is simple: if you own Penumbra stock and haven't voted, you must do so immediately, or you are effectively blocking the merger.

🔗 How to Vote & Get Help

The letters give shareholders three ways to vote:

By Internet (with an easy "VOTE NOW" link if received by email).
By Telephone.
By Mail (returning the proxy card).

For any questions or help voting, shareholders can call the proxy solicitor, INNISFREE M&A INCORPORATED, at:

TOLL-FREE: (877) 456-3402 (U.S. & Canada)
International: +1 (412) 232-3651

📚 The Legal & Regulatory Section

The bottom half of the filing is the legally required "fine print." It's dense but crucial. It does a few key things:

Tells you where to find the real details: It points investors to the official Proxy Statement/Prospectus filed with the SEC, which has all the nitty-gritty details about the merger terms, risks, and financials.
Provides resource links: It lists websites where you can read these documents for free:
- SEC website: www.sec.gov
- Penumbra Investor Relations: https://www.penumbrainc.com/investors/sec-filings/
- Boston Scientific Investor Relations: https://investors.bostonscientific.com/financials-and-filings/sec-filings
Lists contact emails for investor relations:
- Penumbra: [email protected]
- Boston Scientific: [email protected]

🗓️ Key Dates to Remember

May 6, 2026: The Special Meeting of Penumbra Stockholders where the merger vote takes place.
April 29, 2026 (On or about): Date the third and final reminder letter is expected to be sent.

💡 Why This Matters to You

This filing is the final countdown for a major corporate event. It shows:

Urgency: The deal hinges on this vote. A lack of participation could derail the entire merger.
Process: It highlights the careful, regulated steps companies must take to ensure shareholders are informed and have their say.
Transparency: Every reminder and all related documents are made public, giving every investor access to the same information.

🧠 The Analogy

Think of this like a final notice before a homeowners' association vote on a major community project. The board has already proposed the project (the merger) and sent out the plans (the proxy statement). These letters are like the flyers slipped under doors saying, "The vote is next week! If you don't vote, it's the same as saying 'no.' Please cast your ballot online or mail it in today. Here's the number to call if you need help."

🧩 Final Takeaway

Penumbra and Boston Scientific are in the home stretch of their merger, awaiting the final, mandatory shareholder approval on May 6th. This filing is a public paper trail of their urgent last-minute push to get out the vote, reminding shareholders that their inaction is effectively a vote against the deal.

Penumbra Inc — 425 Filing