SCHEDULE: FMR LLC Reports 14.5% Stake in Immuneering Corp

FMR LLC and Abigail P. Johnson disclose a 14.5% beneficial ownership in Immuneering Corp's Class A Common Stock as of September 30, 2025.

Summary

• FMR LLC and Abigail P. Johnson collectively beneficially own 8,787,052 shares of Immuneering Corp's Class A Common Stock.
• This ownership represents 14.5% of the total outstanding Class A Common Stock.
• FMR LLC holds sole voting power over 8,780,283 shares and sole dispositive power over 8,787,052 shares.
• Abigail P. Johnson holds sole dispositive power over 8,787,052 shares, with no sole or shared voting power reported directly.
• Fidelity Growth Company Commingled Pool, an entity associated with FMR LLC, is known to have an interest of 3,317,460 shares, or 5.5% of the Class A Common Stock, as of September 30, 2025.
• The securities were acquired and are held in the ordinary course of business, not for the purpose of changing or influencing control of Immuneering Corp.

Sentiment

Score: 7

Explanation: The filing reveals a substantial 14.5% beneficial ownership by FMR LLC and Abigail P. Johnson, a significant institutional investor, which generally signals confidence in the company's long-term prospects. However, the filing does not contain operational or financial performance data.

Positives

• A significant 14.5% beneficial ownership by a major institutional investor like FMR LLC can signal confidence in Immuneering Corp's long-term prospects.
• The disclosure provides transparency regarding substantial institutional backing for the company.

Future Outlook

The filing is a disclosure of current beneficial ownership and does not contain forward-looking statements or guidance regarding Immuneering Corp's future performance or operations.

Management Comments

• "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."

Industry Context

This filing represents a routine disclosure by a significant institutional investor, FMR LLC (Fidelity), of its passive ownership stake in a publicly traded company. Such disclosures are common and provide market participants with transparency into major shareholder positions, which can be a factor in assessing a company's institutional support.

Stakeholder Impact

• Shareholders benefit from the transparency of knowing that a major institutional investor holds a significant stake, which can influence market perception and confidence.

Key Dates

Recommendation

The filing reports a substantial institutional ownership stake by FMR LLC and Abigail P. Johnson in Immuneering Corp, indicating a significant long-term position. While this suggests confidence from a major investor, the Schedule 13G itself does not provide operational or financial performance data to warrant a 'buy' or 'sell' recommendation. Therefore, a 'hold' recommendation is appropriate, acknowledging the institutional backing without new performance insights.

Keywords

Immuneering Corp, FMR LLC, Abigail P. Johnson, Schedule 13G, Class A Common Stock, beneficial ownership, institutional investor, equity stake