SEC Filing Analysis: Dynavax Technologies Corp

Executive Summary

• Trading Significance: High
• Key Takeaway: Sanofi has successfully acquired a controlling stake of approximately 73.92% in Dynavax Technologies Corp through a tender offer valued at over $1.31 billion, paving the way for a full merger and delisting of Dynavax stock.
• Market Impact: This is a definitive change-of-control event, concluding Dynavax's tenure as an independent public company.

Company Information

Field	Value
Company	Dynavax Technologies Corp
Ticker Symbol	DVAX (Note: Not in filing, but publicly known; will be delisted)
CIK	0001029142
Industry	Pharmaceutical Preparations

Acquirer Information

Field	Value
Name	Sanofi
CIK	0001121404
Title/Position	Not Applicable
Relationship	Offeror / Acquirer

Transaction Details

Field	Value
Form Type	SC TO-T/A
Transaction Date	2026-02-09
Transaction Code	Not Applicable (Tender Offer)
Security Type	Common Stock, Par Value $0.001 Per Share
Shares Involved	84,680,752
Price Per Share	$15.50
Total Value	$1,312,551,656
Shares Owned After	Not specified, but total holding represents ~73.92% of outstanding shares
Ownership Type	Indirect (via Samba Merger Sub, Inc.)

Financial Impact Assessment

Transaction Materiality

Note: The provided market data was for the acquirer (Sanofi). The following analysis is based on data derived from the filing for the target company (Dynavax) for accurate context.

Metric	Value
Transaction Value	$1,312,551,656
Estimated Target Market Cap	~$1.78 Billion (based on offer price and implied shares outstanding)
% of Market Cap	~73.9%
Shares Transacted	84,680,752
% of Shares Outstanding	~73.9% (of total shares outstanding, based on filing data)
Post-Transaction Ownership	~73.92% of outstanding shares
Materiality Assessment	Highly Significant

Impact Evaluation

• Market Cap Context: The transaction value represents a complete buyout of Dynavax, a multi-billion dollar entity. This is not an insider trade but a full corporate acquisition.
• Ownership Concentration: Sanofi, through its subsidiary, has moved from a potential suitor to the controlling majority shareholder, enabling it to execute a short-form merger without a stockholder vote.
• Dilution Impact: Not applicable. This is an acquisition of existing shares, not an issuance of new ones. The event is terminal for public shareholders, who will be cashed out.
• Transaction Significance: As a change-of-control transaction representing the vast majority of the company's equity and market value, the significance is maximal.

Market Impact Analysis

Stock Impact Prediction

• Direction: Neutral
• Reasoning: This filing confirms the results of the tender offer. For remaining Dynavax shareholders, their shares will be converted to cash at the $15.50 offer price upon the merger's completion. Trading will cease, and the stock will be delisted, ending its public market journey.

Volume & Sentiment

• Expected Volume Impact: Trading volume will cease upon delisting.
• Sentiment Indicator: Neutral. The event is a finalized acquisition, not a speculative market event. The outcome is now certain for shareholders.

Investment Insights

Positive Market Indicators

• The successful tender offer indicates strong shareholder acceptance of the $15.50 per share valuation.
• For Sanofi, this represents a strategic acquisition to bolster its portfolio.

Risk Factors

• All risks are now moot for Dynavax public shareholders, as the company is being acquired and they will be cashed out.

Key Takeaways

1. Acquisition Complete: Sanofi's tender offer for Dynavax was successful, with 84,680,752 shares tendered.
2. Change of Control: Sanofi now controls ~73.92% of Dynavax, sufficient to proceed with a merger and take the company private.
3. Delisting Imminent: Dynavax shares will be delisted from the NASDAQ Global Select Market, and shareholders not part of the tender will receive cash for their shares.

Additional Context

Transaction Notes

• This filing is Amendment No. 3 to the original Schedule TO, serving as the final amendment reporting the results of the tender offer.
• The offer expired at one minute following 11:59 P.M., Eastern Time, on February 9, 2026.