# EDGAR Filing Document

**Accession Number:** 0001205922
**File Stem:** 0001193125-23-020775
**Filing Date:** 2023-2
**Character Count:** 48971
**Document Hash:** 5667ae33530405b0065ee9918f63cc9c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-020775.hdr.sgml**: 20230201

**ACCESSION NUMBER**: 0001193125-23-020775

**CONFORMED SUBMISSION TYPE**: 424B3

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20230201

**DATE AS OF CHANGE**: 20230201

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** VACCINEX, INC.
- **CENTRAL INDEX KEY:** 0001205922
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **IRS NUMBER:** 161603202
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 424B3
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-269385
- **FILM NUMBER:** 23574633

**BUSINESS ADDRESS:**
- **STREET 1:** 1895 MOUNT HOPE AVE
- **CITY:** ROCHESTER
- **STATE:** NY
- **ZIP:** 14620
- **BUSINESS PHONE:** 585-271-2700

**MAIL ADDRESS:**
- **STREET 1:** 1895 MOUNT HOPE AVE
- **CITY:** ROCHESTER
- **STATE:** NY
- **ZIP:** 14620

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** VACCINEX INC
- **DATE OF NAME CHANGE:** 20021114

##### [**Table of Contents**](#toc)
**Filed Pursuant to Rule 424(b)(3)<br>Registration No. 333-269385**

<br> **PROSPECTUS**![LOGO](g455019dsp003.jpg)

**1,616,331 Shares of Common Stock** 

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This prospectus relates to the resale, from time to time, by the selling stockholders identified in this prospectus under the caption "Selling Stockholders," or the Selling Stockholders, of up to 1,616,331 shares of our common stock, par value $0.0001 per share. We are not selling any shares of common stock under this prospectus and will not receive any proceeds from the sale of shares of common stock by the Selling Stockholders hereunder. The Selling Stockholders will bear all commissions and discounts, if any, attributable to the sale of the shares. We will bear all costs, expenses, and fees in connection with the registration of the shares.

The Selling Stockholders may sell the shares of our common stock offered by this prospectus from time to time on terms to be determined at the time of sale through ordinary brokerage transactions or through any other means described in this prospectus under the caption "Plan of Distribution." The shares of common stock may be sold at fixed prices, at market prices prevailing at the time of sale, at prices related to prevailing market price, or at negotiated prices.

Our common stock is listed on the Nasdaq Capital Market under the symbol "VCNX." On January 31, 2023, the closing price of our common stock was $0.5955 per share.

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**Investing in our common stock involves a high degree of risk. See "[Risk Factors](#tx455019_4)" beginning on page 5 of this prospectus and under similar headings in the documents incorporated by reference into this prospectus.** 

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**Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.** 

**The date of this prospectus is February 1, 2023.** 

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**TABLE OF CONTENTS** 

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| | |
|:---|:---|
|  [About this Prospectus](#tx455019_1) | i |
|  [Prospectus Summary](#tx455019_2) | 1 |
|  [The Offering](#tx455019_3) | 4 |
|  [Risk Factors](#tx455019_4) | 5 |
|  [Special Note Regarding Forward-Looking Statements](#tx455019_5) | 6 |
|  [Use of Proceeds](#tx455019_6) | 8 |
|  [Selling Stockholders](#tx455019_7) | 9 |
|  [Plan of Distribution](#tx455019_8) | 11 |
|  [Legal Matters](#tx455019_9) | 13 |
|  [Experts](#tx455019_10) | 13 |
|  [Incorporation By Reference](#tx455019_11) | 13 |
|  [Where You Can Find More Information](#tx455019_12) | 14 |

---

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##### [**Table of Contents**](#toc)
**ABOUT THIS PROSPECTUS** 

This prospectus relates to the resale by the Selling Stockholders identified in this prospectus under the caption "Selling Stockholders," from time to time, of up to an aggregate of 1,616,331 shares of our common stock, par value $0.0001 per share. We are not selling any shares of our common stock under this prospectus, and we will not receive any proceeds from the sale of shares of common stock offered by the Selling Stockholders hereunder.

This prospectus is part of a registration statement on Form S-3 that we have filed with the Securities and Exchange Commission, or the SEC, using a shelf registration process. Under this registration statement, the Selling Stockholders may sell from time to time in one or more offerings the common stock described in this prospectus. It omits some of the information contained in the registration statement, and reference is made to the full registration statement for further information with regard to us and the securities being offered by the Selling Stockholders. Any statement contained in the prospectus concerning the provisions of any document filed as an exhibit to the registration statement or otherwise with the SEC is not necessarily complete, and in each instance, reference is made to the document filed. You should review the complete document to evaluate such statements.

You should carefully read this prospectus, any documents that we incorporate by reference in this prospectus and the information below under the captions "Where You Can Find More Information" and "Incorporation of Documents By Reference" before making an investment decision. You should rely only on the information contained or incorporated by reference in this prospectus. We have not authorized any person to provide you with different information. If anyone provides you with additional, different, or inconsistent information, you should not rely on it. This prospectus is not an offer to sell these securities, and it is not soliciting an offer to buy these securities, in any jurisdiction where the offer or sale is not permitted.

You should not assume that the information in this prospectus or any documents we incorporate by reference herein is accurate as of any date other than the date of each such document. Our business, financial condition, results of operations, and prospects may have changed since those dates.

This prospectus and the documents that are incorporated by reference herein contain certain market data and industry statistics and forecasts that are based on studies and clinical trials sponsored by Vaccinex or third parties, independent industry publications, and other publicly available information. Although we believe these sources are reliable, we do not guarantee the accuracy or completeness of this information and we have not verified any of this data. Further, many of these statements involve risks and uncertainties and are subject to change based on various factors, including those discussed or referenced under the caption "Risk Factors" in this prospectus and under similar captions in the documents that are incorporated by reference herein. Accordingly, investors should not place undue reliance on this information.

References in this prospectus to the terms "Vaccinex," "the Company," "we," "our," and "us," or other similar terms, mean Vaccinex, Inc. and our subsidiaries, unless we state otherwise or the context indicates otherwise.

i

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**PROSPECTUS SUMMARY** 

*This summary highlights information contained in other parts of this prospectus and in the documents we incorporate by reference. Because it is only a summary, it does not contain all of the information that you should consider before investing in our securities and it is qualified in its entirety by, and should be read in conjunction with, the more detailed information appearing elsewhere in this prospectus, any applicable free writing prospectus, and the documents incorporated by reference herein and therein. You should read all such documents carefully, especially the risk factors and our consolidated financial statements and the related notes included or incorporated by reference herein or therein, before deciding to buy shares of our common stock.* 

**Company Overview** 

We are a clinical-stage biotechnology company engaged in the discovery and development of targeted biotherapeutics to treat serious diseases and conditions with unmet medical needs, including cancer, neurodegenerative diseases, and autoimmune disorders. We believe we are the leader in the field of semaphorin 4D, or SEMA4D, biology and that we are the only company targeting SEMA4D as a potential treatment for cancer, neurodegenerative diseases, or autoimmune disorders. SEMA4D is an extracellular signaling molecule that regulates the migration of immune and inflammatory cells to sites of injury, cancer, or infection. We are leveraging our SEMA4D antibody platform and our extensive knowledge of SEMA4D biology to develop our lead product candidate, pepinemab, an antibody that we believe utilizes novel mechanisms of action. We are focused on developing pepinemab for the treatment of head and neck cancer, or HNSCC, Huntington's disease, or HD, and Alzheimer's disease, or AD. Additionally, third party investigators are studying pepinemab in integrated biomarker "window of opportunity" studies in head and neck cancer and melanoma. We have developed multiple proprietary platform technologies and are developing product candidates to address serious diseases or conditions that have a substantial impact on day-to-day functioning and for which treatment is not addressed adequately by available therapies. We employ our proprietary platform technologies, including through our work with our academic collaborators, to identify potential product candidates for sustained expansion of our internal product pipeline, and to facilitate strategic development and commercial partnerships.

Our lead platform technologies include our SEMA4D antibody platform and our ActivMAb<sup>®</sup> antibody discovery platform. Our lead product candidate, pepinemab, is currently in clinical development for the treatment of HNSCC, Huntington's disease, and Alzheimer's disease, through our efforts or through investigator-sponsored trials, or ISTs. We believe our multiple platform technologies position us well for continued pipeline expansion and partnership opportunities going forward.

Our current research and development activities primarily relate to clinical development in the following indications:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Cancer Studies.** We and others have shown that SEMA4D, the target of pepinemab, is highly expressed in
head and neck cancer where it impedes recruitment and activation of cytotoxic T cells that can attack the tumor while also inducing differentiation of myeloid derived suppressor cells that inhibit any remaining tumoricidal immune activity. Head and
neck cancer is, therefore, a cancer in which immunotherapy with pepinemab in combination with a checkpoint inhibitor such as Keytruda<sup>®</sup><sup>
</sup>(pembrolizumab) could be uniquely effective. We have entered into a collaboration with Merck Sharp & Dohme Corp., a subsidiary of Merck & Co. Inc., which is supplying Keytruda, for first-line treatment of up to 65 patients
with recurrent or metastatic head and neck cancer. In January 2022, we reported interim safety and response data in the Phase 1b segment of the trial that indicated that the combination of pepinemab and Keytruda appears to be well tolerated, and the
Phase 2 expansion segment of the study has begun enrollment. We expect to report results of interim analysis from this study in the first quarter of 2023.

Pepinemab is also being evaluated by third parties in ISTs, and in multiple "window of opportunity" studies in additional cancer indications.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Huntington's Disease.** We evaluated pepinemab for the treatment of HD in our Phase 2 SIGNAL
trial. Topline data for this trial, consisting of 265 subjects, was reported in late September 2020. Although the study did not meet its prespecified primary endpoints, it provided important new information, including evidence of cognitive
benefit and a reduction in brain atrophy in patients with manifest disease symptoms. An improved study design would focus on patients with early signs of cognitive or functional deficits, as they appeared to derive the greatest treatment benefit. We
are evaluating our development strategy in terms of business opportunity and other near-term clinical activities and are currently preparing briefing materials and a request for a meeting with the Food and Drug Administration in early 2023 to
discuss use of the Huntington's Disease – Cognitive Assessment Battery in future trial design.  **** ** 

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Alzheimer's Disease.** Given the impact of the COVID-19 pandemic in 2020 and 2021, we delayed plans to initiate a clinical trial of pepinemab in Alzheimer's disease until mid-2021. We have now initiated patient
screening and enrollment in a randomized, double-blind, placebo-controlled, multi-center phase 1/2a study of pepinemab in 40 patients with mild AD. The planned duration of treatment is 12 months, and key efficacy endpoints include the change in
brain metabolism as assessed by FDG-PET, a biomarker that has been shown in multiple clinical studies to correlate with cognitive decline in AD and is a measure of clinical progression, as well as the
cognition of patients as assessed based on standardized measures. We currently expect to complete enrollment in this trial in the first half of 2023 with topline results of 12-month treatment with pepinemab
expected in 2024.

**Recent Developments** 

On January 9, 2023, Surface Oncology, or Surface, announced that it had dosed the first patient in its Phase 1/2 clinical study investigating SRF114, an anti-CCR8 antibody discovered using our ActivMAb antibody discovery platform and licensed to Surface in 2021, as a monotherapy for the treatment of advanced solid tumors.

**Our Corporate Information** 

We were incorporated under the laws of the State of Delaware in April 2001. Our principal executive offices are located at 1895 Mount Hope Avenue, Rochester, New York 14620, and our telephone number is (585) 271-2700. Our website address is *www.vaccinex.com*. Our website and the information contained on or accessible through our website are not incorporated by reference in, and are not considered part of, this prospectus, and any reference to our website is intended to be an inactive textual reference only. You should not rely on any such information in making your decision to purchase our common stock.

**Implications of Being an Emerging Growth Company and a Smaller Reporting Company** 

We are an "emerging growth company," as defined in the Jumpstart Our Business Startups Act of 2012, or the JOBS Act. We will remain an emerging growth company until the earliest of: (i) December 31, 2023; (ii) the last day of the first fiscal year in which our annual gross revenues are $1.235 billion or more; (iii) the date on which we have, during the previous three-year period, issued more than $1.0 billion in non-convertible debt securities; or (iv) the last day of the first fiscal year in which the market value of our common stock held by non-affiliates exceeded $700 million as of the end of the second quarter of that fiscal year.

For as long as we remain an emerging growth company, we may take advantage of certain exemptions from various reporting requirements that are applicable to public companies that are not "emerging growth companies" including, but not limited to, not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act, as amended, reduced disclosure obligations regarding executive compensation and financial statements in our periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote to approve executive compensation and shareholder approval of any golden parachute payments not previously approved. We may take advantage of one or more of these reporting exemptions until we are no longer an emerging growth company.

The JOBS Act provides that an emerging growth company can take advantage of an extended transition period for complying with new or revised accounting standards, and we have elected to do so.

We are also a "smaller reporting company" and will remain a smaller reporting company while we have determined that either (i) the market value of our stock held by non-affiliates was less than $250 million as of the last business day of our most recently completed second fiscal quarter or (ii) our annual revenue was less than $100 million during our most recently completed fiscal year and the market value of our stock held by non-affiliates was less than $700 million as of the last business day of our most recently completed second fiscal quarter. If we are a smaller reporting company at the time we cease to be an emerging growth company, we may continue to rely on exemptions from certain disclosure requirements that are available to smaller reporting companies, including many of the same exemptions from disclosure obligations that are available to emerging growth companies, such as reduced disclosure obligations regarding executive compensation. We may take advantage of one or more of these reporting exemptions until we are no longer a smaller reporting company.

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**Private Placement** 

On November 18, 2022, we entered into a stock purchase agreement, or the Stock Purchase Agreement, with the investors named therein, at a purchase price of $0.5293 per share. The closing of the sale of shares under the Stock Purchase Agreement, or the Private Placement, occurred on November 23, 2022, and we issued an aggregate of 7,142,496 shares of our common stock for aggregate gross proceeds of approximately $3.8 million. In connection with the Private Placement, we entered into a registration rights agreement with the Selling Stockholders, pursuant to which we agreed, among other things, to file with the SEC a registration statement covering the resale of the 1,616,331 shares of our common stock purchased by the Selling Stockholders.

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**The Offering** 

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| | |
|:---|:---|
| Shares of common stock offered by the Selling Stockholders: | 1,616,331 shares of common stock |
| Terms of this offering: | The Selling Stockholders may sell, transfer, or otherwise dispose of any or all of the shares of common stock offered by this prospectus from time to time as described under the caption "Plan of Distribution" in this prospectus. |
| Use of proceeds: | All proceeds from the sale of shares of common stock offered hereby will be for the account of the Selling Stockholders. We will not receive any proceeds from the sale of common stock offered hereunder. See the caption "Use of Proceeds" in this prospectus. |
| Risk factors: | Investing in our common stock involves a high degree of risk and purchasers of our common stock may lose their entire investment. See the information under the caption "Risk Factors" on page 5 of this prospectus and the other information included elsewhere in this prospectus and incorporated by reference herein for a discussion of factors you should consider before deciding to invest in our securities. |
| Nasdaq Capital Market symbol: | VCNX |

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When we refer to the Selling Stockholders in this prospectus, we are referring to the Selling Stockholders identified in this prospectus and, as applicable, their permitted transferees or other successors-in-interest that may be identified in a supplement to this prospectus or, if required, a post-effective amendment to the registration statement of which this prospectus is a part.

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**RISK FACTORS** 

Investing in our common stock involves a high degree of risk. You should carefully consider and evaluate all of the information contained in this prospectus and in the documents incorporated by reference in this prospectus before you decide to purchase our common stock. In particular, you should carefully consider and evaluate the risks and uncertainties described in "Part I – Item 1A. Risk Factors" of our most recent Annual Report on Form 10-K, as updated by our subsequent Quarterly Reports on Form 10-Q and the additional risks and uncertainties set forth or incorporated by reference herein. Additional risks and uncertainties that we are unaware of or that we believe are not material at this time could also materially adversely affect our business, financial condition, or results of operations. Any of these risks and uncertainties could materially and adversely affect our business, results of operations and financial condition, which in turn could materially and adversely affect the trading price or value of our common stock. As a result, you could lose all or part of your investment.

This prospectus also contains forward-looking statements that involve risks and uncertainties. Our actual results could differ materially from those anticipated in these forward-looking statements as a result of certain factors, including the risks faced by us described below and elsewhere in this prospectus. See "Special Note Regarding Forward-Looking Statements" for information relating to these forward-looking statements.

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**SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS** 

This prospectus contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, or the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act, which statements involve substantial risks and uncertainties. All statements, other than statements of historical facts, included in this prospectus or the documents incorporated herein by reference, including statements regarding our future results of operations and financial position, our business strategy and plans, and our objectives for future operations, are forward-looking statements. The words "anticipate," "believe," "estimate," "expect," "intend," "may," "might," "plan," "predict," "target," "potential," "will," "would," "could," "should," "continue," and similar expressions that convey uncertainty of future events or outcomes are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words.

The forward-looking statements in this prospectus include, among other things, statements about:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our ability to continue as a going concern;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our ability to maintain the listing of our common stock on Nasdaq;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the impacts of the COVID-19 pandemic on the expected timing and
progress of our clinical trials, as well as other impacts of the COVID-19 pandemic on the economy, our industry, and our business, financial condition, and results of operations, including our ability to raise
capital;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the sufficiency of the financing arrangements we have entered into that are intended to fund our payroll and
certain other operations for a limited period of time and our ability to service our outstanding debt obligations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our estimates regarding our expenses, future revenues, anticipated capital requirements, and needs for
additional financing;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the impact of inflation on our expenses and business;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the implementation of our business model and strategic plans for our business and technology;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the timing and success of the commencement, progress, and receipt of data from any of our preclinical and
clinical trials;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• interim and preliminary data and our expectations for later clinical trials based upon such data;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our expectations regarding the potential safety, efficacy, or clinical utility of our product candidates;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the expected results of any clinical trial and the impact on the likelihood or timing of any regulatory
approval;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the difficulties in obtaining and maintaining regulatory approval of our product candidates;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the rate and degree of market acceptance of any of our product candidates;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the success of competing therapies and products that are or become available;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• regulatory developments in the United States and foreign countries;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• current and future legislation regarding the healthcare system;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the scope of protection we establish and maintain for intellectual property rights covering our technology;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• developments relating to our competitors and our industry;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our failure to recruit or retain key scientific or management personnel or to retain our executive officers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the performance of third parties, including collaborators, contract research organizations and third-party
manufacturers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the development of our commercialization capabilities, including the need to develop or obtain additional
capabilities; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our use of the proceeds from the offerings of our common stock.

These statements are only current predictions and are subject to known and unknown risks, uncertainties, and other factors that may cause our or our industry's actual results, levels of activity, performance, or achievements to be materially different from those anticipated by the forward-looking statements. We discuss many of these risks in greater detail in the risk factors in our most recent Annual Report on Form 10-K, our subsequent Quarterly Reports on Form 10-Q, and other filings we make with the SEC pursuant to Section 13(a), 13(c), 14, or 15(d) of the Exchange Act. You should not rely upon forward-looking statements as predictions of future events.

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Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, levels of activity, performance, or achievements. Except as required by law, after the date of this prospectus, we are under no duty to update or revise any of the forward-looking statements, whether as a result of new information, future events or otherwise.

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**USE OF PROCEEDS** 

All shares of our common stock offered by this prospectus are being registered for the account of the Selling Stockholders. We will not receive any of the proceeds from the sale of these shares hereunder. We have agreed to pay all costs, expenses, and fees relating to the registration of the shares of our common stock covered by this prospectus.

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**SELLING STOCKHOLDERS** 

This prospectus covers an aggregate of up to 1,616,331 shares of our common stock that may be sold or otherwise disposed of by the Selling Stockholders.

The following table sets forth certain information with respect to the Selling Stockholders, including (i) the shares of our common stock beneficially owned by the Selling Stockholders prior to this offering, (ii) the number of shares being offered by the Selling Stockholders pursuant to this prospectus and (iii) the Selling Stockholders' beneficial ownership after completion of this offering, assuming that all of the shares covered hereby (but none of the other shares, if any, held by the Selling Stockholders) are sold to third parties.

The table is based on information supplied to us by the Selling Stockholders, with beneficial ownership and percentage ownership determined in accordance with the rules and regulations of the SEC, and includes voting or investment power with respect to shares of stock. This information does not necessarily indicate beneficial ownership for any other purpose. The percentage of beneficial ownership after this offering is based on 49,880,861 shares outstanding on January 11, 2023.

The registration of these shares of common stock does not mean that the Selling Stockholders will sell or otherwise dispose of all or any of those securities. The Selling Stockholders may sell or otherwise dispose of all, a portion or none of such shares from time to time. We do not know the number of shares, if any, that will be offered for sale or other disposition by the Selling Stockholders under this prospectus. Furthermore, the Selling Stockholders may have sold, transferred, or disposed of the shares of common stock covered hereby in transactions exempt from the registration requirements of the Securities Act since the date on which we filed this prospectus.

When we refer to the Selling Stockholders in this prospectus, we are referring to the Selling Stockholders identified in this prospectus and, as applicable, their permitted transferees or other successors-in-interest that may be identified in a supplement to this prospectus or, if required, a post-effective amendment to the registration statement of which this prospectus is a part.

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Beneficial Ownership Before<br>This Offering** | **Beneficial Ownership Before<br>This Offering** | | **Beneficial Ownership After<br>This Offering** | **Beneficial Ownership After<br>This Offering** |
| **Selling Stockholder** | **Number of**<br>**Shares**<br>**Owned** | **Percentage of<br>Outstanding<br>Shares** |<br>**Shares of Common<br>Stock to be Sold in<br>the Offering** | **Number of<br>Shares Owned** | **Percentage<br>of**<br>**Outstanding<br>Shares** |
|  3i, LP <sup>(1)</sup> | 649318 | 1.3% | 649318 |  | \* |
|  AIGH Investment Partners, L.P. <sup>(2)</sup> | 1944006 | 3.9% | 370000 | 1574006 | 3.2% |
|  Earl Grey Holdings Inc. <sup>(3)</sup> | 1472321 | 3.0% | 472321 | 1000000 | 2.0% |
|  Lublin Financial Corporation <sup>(4)</sup> | 904692 | 1.8% | 124692 | 780000 | 1.6% |

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\* Less than 1%. 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) Maier J. Tarlow is the manager of 3i Management LLC, which is the general partner of 3i, LP, or 3i, and in
such capacity has the right to vote and dispose of the securities held by 3i.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) Orin Hirschman is the managing member of AIGH Capital Management, LLC, or AIGH CM, a Maryland limited
liability company, which is an advisor with respect to the securities held by AIGH Investment Partners, L.P., or AIGH IP. Mr. Hirschman has voting and investment power over the securities indirectly held by AIGH CM and directly held by AIGH IP.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3) Voting and investment power over the shares is held by Saul Koschitzky, President of Earl Grey Holdings Inc.

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4) Voting and investment power over the shares is held by Joseph Rutman, Director of Lublin Financial
Corporation.

**Relationships with the Selling Stockholders** 

In August 2020, we issued a 7% Original Issue Discount Senior Secured Convertible Debenture due August 3, 2021, or the Debenture, to 3i in the principal amount of $8.64 million for a purchase price of $8.0 million, which reflects an original issue discount of approximately 8%. The Debenture accrued interest at 7% per year, matured on August 3, 2021, and was repaid in full as of the maturity date. The Selling Stockholders have not within the past three years had any position, office, or other material relationship with us or any of our subsidiaries other than as holders of our securities and, with respect to 3i, in connection with the Debenture. To our knowledge, the Selling Stockholders are not affiliates of any broker-dealer registered in the United States.

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**PLAN OF DISTRIBUTION** 

We are registering the shares of common stock on behalf of the Selling Stockholders. The Selling Stockholders and any of their pledgees, assignees, and successors-in-interest may, from time to time, on a continuous or delayed basis, sell any or all of their common stock covered hereby directly to one or more purchasers or through brokers, dealers, or underwriters who may act solely as agents at market prices prevailing at the time of sale, at prices related to the prevailing market prices, at negotiated prices, or at fixed prices, which may be changed on any stock exchange, market or trading facility on which the shares are traded or in private transactions. The sale of the Selling Stockholders' common stock offered by this prospectus may be effected in one or more of the following methods:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• ordinary brokerage transactions and transactions in which the broker-dealer solicits purchasers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• transactions involving cross or block trades;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• purchases by a broker-dealer as principal and resale by the broker-dealer for its account;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• exchange distributions in accordance with the rules of the applicable exchange;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• privately negotiated transactions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• short sales after the registration statement of which this prospectus forms a part becomes effective;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• transactions through broker-dealers that agree with the Selling Stockholders to sell a specified number of
such shares at a stipulated price per share;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• through the writing or settlement of options or other hedging transactions, whether through an options
exchange or otherwise;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• "at the market" into an existing market for the common stock;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• through the writing of options on the shares;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• a combination of any such methods of sale; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• any other method permitted pursuant to applicable law.

In order to comply with the securities laws of certain states, if applicable, the shares of the Selling Stockholders may be sold only through registered or licensed brokers or dealers. In addition, in certain states, such shares may not be sold unless they have been registered or qualified for sale in the state or an exemption from the registration or qualification requirement is available and complied with.

The Selling Stockholders may also sell or transfer shares of common stock pursuant to any available exemption from the registration requirements of the Securities Act, including under Rule 144 promulgated under the Securities Act, or Rule 144, if available, rather than under this prospectus. In addition, the Selling Stockholders may transfer the shares of common stock by other means not described in this prospectus.

The Selling Stockholders may also sell the shares directly to market makers acting as principals and/or broker-dealers acting as agents for themselves or their customers. Such broker-dealers may receive compensation in the form of discounts, concessions, or commissions from the Selling Stockholders and/or the purchasers of shares for whom such broker-dealers may act as agents or to whom they sell as principal or both, which compensation as to a particular broker-dealer might be in excess of customary commissions. Market makers and block purchasers purchasing the shares will do so for their own account and at their own risk. It is possible that the Selling Stockholders will attempt to sell shares of common stock in block transactions to market makers or other purchasers at a price per share that may be below the then market price.

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Brokers, dealers, underwriters, or agents participating in the distribution of the shares held by the Selling Stockholders as agents may receive compensation in the form of commissions, discounts, or concessions from the Selling Stockholders and/or purchasers of the common stock for whom the broker-dealers may act as agent. The Selling Stockholders may agree to indemnify any agent, dealer, or broker-dealer that participates in transactions involving sales of the shares if liabilities are imposed on that person under the Securities Act.

The Selling Stockholders have advised us that they have not entered into any agreements, understandings, or arrangements with any underwriters or broker-dealers regarding the sale of their shares of common stock, nor is there an underwriter or coordinating broker acting in connection with a proposed sale of shares of common stock by the Selling Stockholders. If we are notified by the Selling Stockholders that any material arrangement has been entered into with a broker-dealer for the sale of shares of common stock, if required, we will file a supplement to this prospectus.

In connection with the sale of the securities or interests therein, the Selling Stockholders may enter into hedging transactions with broker-dealers or other financial institutions, which may in turn engage in short sales of the securities in the course of hedging the positions they assume. The Selling Stockholders may also sell securities short and deliver these securities to close out their short positions, or loan or pledge the securities to broker-dealers that in turn may sell these securities. The Selling Stockholders may also enter into option or other transactions with broker-dealers or other financial institutions or create one or more derivative securities that require the delivery to such broker-dealer or other financial institution of securities offered by this prospectus, which securities such broker-dealer or other financial institution may resell pursuant to this prospectus (as supplemented or amended to reflect such transaction).

With regard only to the shares it sells for its own behalf, each Selling Stockholder may be deemed an "underwriter" within the meaning of the Securities Act. This offering as it relates to each Selling Stockholder will terminate on the date that all shares offered by the Selling Stockholder pursuant to this prospectus have been sold.

We may suspend the sale of shares by the Selling Stockholders pursuant to this prospectus for certain periods of time for certain reasons, including if the prospectus is required to be supplemented or amended to include additional material information.

If the Selling Stockholders use this prospectus for any sale of the shares of common stock, the Selling Stockholders will be subject to the prospectus delivery requirements of the Securities Act.

We are required to pay the expenses in connection with the registration of the shares being registered hereunder. We have agreed to indemnify the Selling Stockholders against certain losses, claims, damages, and liabilities, including liabilities under the Securities Act.

We agreed to keep this prospectus effective until the date that (i) the securities may be resold by the Selling Stockholders without registration and without regard to any volume or manner-of-sale limitations by reason of Rule 144, without the requirement for us to be in compliance with the current public information under Rule 144 or any other rule of similar effect or (ii) all of the securities have been sold pursuant to this prospectus or Rule 144 or any other rule of similar effect.

***Regulation M***

The anti-manipulation rules of Regulation M under the Exchange Act may apply to sales of our common stock and activities of the Selling Stockholders.

We have advised the Selling Stockholders that while they are engaged in a distribution of the shares included in this prospectus they are required to comply with Regulation M promulgated under the Exchange Act. With certain exceptions, Regulation M precludes the Selling Stockholders, any affiliated purchasers, and any broker-dealer or other person who participates in the distribution from bidding for or purchasing, or attempting to induce any person to bid for or purchase any security that is the subject of the distribution until the entire distribution is complete. Regulation M also prohibits any bids or purchases made in order to stabilize the price of a security in connection with the distribution of that security. All of the foregoing may affect the marketability of the shares offered hereby this prospectus.

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**LEGAL MATTERS** 

The validity of the shares of common stock offered hereby is being passed upon for us by Hogan Lovells US LLP, Baltimore, Maryland.

**EXPERTS** 

The financial statements of Vaccinex, Inc. (the "Company") as of December 31, 2021 and 2020, and for each of the two years in the period ended December 31, 2021, incorporated by reference in this prospectus by reference to the Company's Annual Report on Form 10-K for the year ended December 31, 2021, have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their report. Such financial statements are incorporated by reference in reliance upon the report of such firm given their authority as experts in accounting and auditing.

**INCORPORATION BY REFERENCE** 

The SEC allows us to "incorporate by reference" information into this prospectus, which means that we can disclose important information to you by referring you to another document filed separately with the SEC. The SEC file number for each of the documents incorporated by reference in this prospectus is 001-38624. The documents incorporated by reference into this prospectus contain important information that you should read about us.

The following documents are incorporated by reference into this document:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our Annual Report on Form 10-K for the year ended
December 31, 2021, filed with the SEC on [March 31, 2022](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/1205922/000156459022012778/vcnx-10k_20211231.htm) ;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our Quarterly Reports on Form 10-Q for the fiscal quarters ended
March 31, 2022, June 30, 2022, and September 30, 2022, filed with the SEC on [May 16, 2022](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/1205922/000156459022020252/vcnx-10q_20220331.htm) , [August 15, 2022](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/1205922/000156459022029397/vcnx-10q_20220630.htm) , and [November 14, 2022](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/1205922/000156459022037499/vcnx-10q_20220930.htm) , respectively;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our Current Reports on Form 8-K (other than portions thereof furnished
under Item 2.02 or Item 7.01 of Form 8-K and exhibits accompanying such reports that relate to such items) filed with the SEC on [January 26, 2022](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/1205922/000119312522017722/d252591d8k.htm) , [January 31, 2022](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/1205922/000119312522023545/d285729d8k.htm) , [March 8, 2022](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/1205922/000119312522069387/d112157d8k.htm) , [April 4, 2022](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/1205922/000119312522095136/d325737d8k.htm) , [May 13, 2022](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/1205922/000119312522150166/d297348d8k.htm) , [August 8, 2022](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/1205922/000119312522214504/d320536d8k.htm) , [October 11, 2022](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/1205922/000119312522260706/d393979d8k.htm) , and [November 25, 2022](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/1205922/000119312522292625/d391207d8k.htm) ; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the description of our capital stock included under the caption "Description of Capital Stock"
contained in our Registration Statement on Form 8-A filed with the SEC on [August 8, 2018](http://www.sec.gov/Archives/edgar/data/1205922/000119312518242464/d602009d8a12b.htm) , including any
amendments or reports filed for the purpose of updating such description, including [Exhibit 4.1](http://www.sec.gov/Archives/edgar/data/1205922/000156459020009251/vcnx-ex41_662.htm) to our Annual Report on Form 10-K for the year ended December 31, 2019, filed with the SEC on March 9, 2020.

All reports and other documents we subsequently file pursuant to Section 13(a), 13(c), 14, or 15(d) of the Exchange Act prior to the termination of this offering, excluding any information furnished to, rather than filed with, the SEC, will also be incorporated by reference into this prospectus and deemed to be part of this prospectus from the date of the filing of such reports and documents. We are not incorporating by reference any documents or portions thereof, whether specifically listed above or filed in the future, that are not deemed "filed" with the SEC, including any information furnished pursuant to Items 2.02 or 7.01 of Form 8-K or related exhibits furnished pursuant to Item 9.01 of Form 8-K.

Any statement contained herein or in a document incorporated or deemed to be incorporated by reference into this document will be deemed to be modified or superseded for purposes of the document to the extent that a statement contained in this document or any other subsequently filed document that is deemed to be incorporated by reference into this document modifies or supersedes the statement.

You may request, orally or in writing, a copy of any or all of the documents incorporated herein by reference. These documents will be provided to you at no cost, by contacting: Vaccinex, Inc., Attn: Corporate Secretary, 1895 Mount Hope Avenue, Rochester, New York 14620. In addition, copies of any or all of the documents incorporated herein by reference may be accessed at our website at *www.vaccinex.com*.

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**WHERE YOU CAN FIND MORE INFORMATION** 

We are a reporting company and file annual, quarterly, and current reports, proxy and information statements, and other information with the SEC. This prospectus is part of a registration statement that we have filed with the SEC relating to the common stock to be offered under this prospectus. This prospectus does not contain all of the information set forth in the registration statement and the exhibits to the registration statement. For further information with respect to us and the common stock to be offered under this prospectus, we refer you to the registration statement and the exhibits and schedules filed as a part of the registration statement.

The SEC maintains an internet site that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC, where you may read and copy the registration statement, as well as our reports, proxy and information statements, and other information. The address of the SEC's web site is *www.sec.gov*.

Copies of certain information filed by us with the SEC are also available on our website at *www.vaccinex.com*.