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SEC Company Response from Avidity Biosciences, Inc. (RNA) (CIK 0001599901) (RNA) — May 26, 2020

Avidity Biosciences, Inc. (RNA) (CIK 0001599901)
Date: May 26, 2020 · CIK: 0001599901 · Accession: 0001193125-20-150629

AI Filing Summary & Sentiment

File numbers found in text: 333-238612

Date
May 26, 2020
Author
Not clearly detected
Form
CORRESP
Company
Avidity Biosciences, Inc. (RNA) (CIK 0001599901)

Letter

VIA EDGAR and HAND DELIVERY Office of Life Sciences Division of Corporation Finance 100 F Street N.E. Washington, D.C. 20549 Re: Avidity Biosciences, Inc. | Anticipated Price Range Registration Statement on Form S-1 (File No. 333-238612)

Dear Ms. Sarmento:

Rule 83 Confidential Treatment Requested by Avidity Biosciences, Inc.

This letter is furnished supplementally on behalf of Avidity Biosciences, Inc. (the “Company”) in connection with the review by the Securities and Exchange Commission (the “Commission”) of the above-mentioned Registration Statement on Form S-1 (the “Registration Statement”). To assist the staff (the “Staff”) of the Commission in its review, the Company advises the Staff that it presently estimates, based in part on information received by the lead underwriters, that the public offering price per share for the offering pursuant to the Registration Statement will be between $[***] and $[***] (without giving effect to any reverse stock split that the Company will effect prior to the offering, the “Preliminary Price Range”), considering information currently available and current market conditions. For clarity, the Company advises the Staff that, given the volatility of the public trading markets and the uncertainty of the timing

[***] Certain information in this document has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested by Avidity Biosciences, Inc. with respect to this letter.

Securities and Exchange Commission

FOIA CONFIDENTIAL TREATMENT REQUEST

Page

of the offering, the Company and the lead underwriters have not yet finally agreed to a price range for the offering. The Company advises the Staff that the final range to be included in a pre-effective amendment to the Registration Statement, after giving effect to an appropriate reverse stock split, will include a price range of no more than $2.00 or 20% of the low end of the range, unless otherwise approved by the Staff.

Recent Stock Option Grants

The Company’s grants of stock options during the prior 12 months, including those made since the latest balance sheet presented in the Registration Statement, are set forth below.

Grant Date

Number of Shares Underlying Options Granted

Per Share Exercise Price of Options

Estimated Fair Market Value of Shares

Reassessed Fair Market Value of Shares

August 28, 2019

40,228

$0.20

$0.20

$1.201

October 3, 2019

286,000

$0.20

$0.20

$1.201

December 18, 2019

2,775,105

$0.59

$0.59

$1.971

February 11, 2020

700,000

$0.59

$0.59

$1.971

February 19, 2020

1,177,313

$0.59

$0.59

$1.971

May 15, 2020

715,000

$4.18

$4.18

N/A

(1) The Reassessed Fair Market Value Price represents a retrospective revaluation as further discussed below.

Common Stock Valuation Methodologies

The Company has historically determined the fair value of its common stock using methodologies, approaches and assumptions consistent with the American Institute of Certified Public Accountants Accounting and Valuation Guide, Valuation of Privately-Held-Company Equity Securities Issued as Compensation (the “AICPA Practice Guide”). In addition, the Board of Directors considered numerous objective and subjective factors, along with input from management and third-party valuations, to determine the fair value of the Company’s common stock as further disclosed on pages 94-95 of the Registration Statement.

For the options granted in August 2019 through February 2020, the Company utilized the option-pricing method (“OPM”) with a guideline public company method and the backsolve method, as applicable, which are accepted valuation methods under the AICPA Practice Guide, for determining the fair value of its common units/stock. The OPM treats a Company’s security classes as call options on total equity value, with exercise prices based on the relative seniority of payments among such security classes. The value of junior equity interests under the OPM is based on the value of optionality over-and-above the value of securities that are senior to them in the capital structure. The guideline public company method is a market approach that derives an implied total equity value by analyzing and comparing the market value and valuation multiples of comparable publicly traded life sciences companies. The backsolve method is a market approach that derives an implied total equity value from the sale price of the Company’s equity securities in a recent arm’s length transaction. The Board of Directors and an independent third-party valuation firm determined that the OPM and public company guideline method was the appropriate method for the Company’s valuations in August and October 2019 because the early stage of the Company’s development programs made it difficult to forecast specific future liquidity

[***] Certain information in this document has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested by Avidity Biosciences, Inc. with respect to this letter.

Securities and Exchange Commission

FOIA CONFIDENTIAL TREATMENT REQUEST

Page

events. The Board of Directors and an independent third-party valuation firm determined that the OPM backsolve method was the appropriate method for the Company’s valuations in December 2019 and February 2020 given the proximity to the arm’s length Series C convertible preferred stock financing (the “Series C Financing”), which had closings in November 2019 and January 2020. The Series C Financing was led by new third-party investors in which the Company sold Series C convertible preferred stock at a price of $4.2812 per share raising gross proceeds of $102.8 million, which purchase price was determined in negotiations with such new investors. After estimating the Company’s total equity value under these market approaches, that value was allocated to the various classes of the Company’s equity using the OPM. In each of these valuations, given the very early nature of the Company and its technology and the high rate of failure for successfully commercializing drugs without additional technological validation, the Company incorporated the probability that the Company would not succeed and would go bankrupt, resulting in liquidation (Bankruptcy scenario), versus the probability that the Company would successfully achieve such objectives (Successful scenario).

Beginning in April 2020, the Company utilized a hybrid of the probability-weighted expected return method (“PWERM”) and OPM for determining the fair value of its common stock as estimates regarding potential future liquidity outcomes were considered reasonable following the Company’s submission on April 3, 2020 of a draft registration statement on Form S-1 related to the Company’s initial public offering (the “IPO”). The PWERM is a scenario-based analysis that estimates the value per share based on the probability-weighted present value of expected future investment returns, considering all of the possible outcomes available to the Company, as well as the economic and control rights of each share class. The Company considered three future event scenarios in the PWERM model: an IPO, a non-IPO (an immediate stay private scenario with an ultimate exit) or bankruptcy. The hybrid method is a hybrid between the PWERM and OPM that uses the PWERM to estimate the probability-weighted value across multiple scenarios and the OPM to estimate the allocation of value within one or more of those scenarios. The Company used the OPM to allocate value in the non-IPO scenario and used the fully-diluted shares outstanding to allocate value in the IPO scenario.

The Company’s Board of Directors and management developed estimates based on the application of these approaches and the assumptions underlying these valuations, giving careful consideration to independent third-party valuation reports. At each grant date, the Board of Directors considered whether any events occurred that would trigger any material changes to the business or would require adjustment to the estimated fair value from the previous valuation date.

In addition, in March 2020 in connection with the audit of the Company’s financial statements for the year ended December 31, 2019, the Company evaluated whether or not, in retrospect, the assumptions utilized for purposes of the August 2019, October 2019, December 2019 and February 2020 option grants were appropriate, as discussed below under the heading “—Retrospective Fair Value Determinations.”

[***] Certain information in this document has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested by Avidity Biosciences, Inc. with respect to this letter.

Securities and Exchange Commission

FOIA CONFIDENTIAL TREATMENT REQUEST

Page

Grant Date Fair Value Determinations

August and October 2019 Option Grants.

The Company’s Board of Directors, with input from management, determined the fair value of its common stock to be $0.20 per share as of August 28, 2019 and October 3, 2019, after considering a valuation report from an independent third-party valuation firm as of April 30, 2019. In reaching this determination, the Board of Directors determined that no material changes had occurred in the business since the date of the third-party valuation report.

As discussed above, the April 30, 2019 valuation used the OPM guideline public company method to value the common stock because the early stage of the Company’s development programs made it difficult to forecast specific future liquidity events. Given the very early nature of the Company and its technology and the expected liquidity event time period, as well as the relatively short time frame of its existing cash runway without another capital raise, the Company incorporated the probability that it would go bankrupt, resulting in liquidation. The April 30, 2019 valuation established the following scenarios and probabilities:

Scenario

Indicated Value

Assigned Weight

DLOM*

Weighted Value Per Unit/Share

Successful

$1.01

20%

30%

$0.20

Bankruptcy

$0

80%

0%

$0.00

Concluded Fair Value

$0.20

* The DLOM was based on the Finnerty Put Option Analysis and consideration of various restricted stock studies.

The Company estimated the average time to a potential liquidity event was five years based on management’s best estimates and it estimated that the liquidation value of its common units in the bankruptcy scenario (i.e. the net amount received by the Company if its assets were sold and liabilities were retired) was $0. After applying a 30% discount for lack of marketability (“DLOM”), the resulting fair value of common stock was $0.20 per share on a non-controlling, non-marketable basis. The Company subsequently reexamined the deemed fair value of its common stock associated with stock options granted in August and October 2019 as discussed below under the heading “—Retrospective Fair Value Determinations.”

December 2019 and February 2020 Option Grants.

The Company’s Board of Directors, with input from management, determined the fair value of its common stock to be $0.59 per share as of December 18, 2019, February 11, 2020 and February 19, 2020, after considering a valuation report from an independent third-party valuation firm as of November 30, 2019. In reaching this determination, the Board of Directors determined that no material changes had occurred in the business since the date of the third-party valuation report.

[***] Certain information in this document has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested by Avidity Biosciences, Inc. with respect to this letter.

Securities and Exchange Commission

FOIA CONFIDENTIAL TREATMENT REQUEST

Page

As discussed above, the November 30, 2019 valuation used the OPM backsolve method to value the common stock because of the proximity to the Series C Financing, which had an initial closing and a subsequent closing in November 2019 and January 2020, respectively. Similar to the prior valuations, given the very early nature of the Company and its technology and the high failure rate of early-stage pharmaceutical companies, after taking into account the cash runway provided by the Series C Financing and the need for additional capital raises, the Company established the following scenarios and probabilities:

Scenario

Indicated Value

Assigned Weight

DLOM*

Weighted Value Per Unit/Share

Successful

$1.97

30%

30%

$0.59

Bankruptcy

$0

70%

0%

$0.00

Concluded Fair Value

$0.59

* The DLOM was based on the Finnerty Put Option Analysis and consideration of various restricted stock studies.

Under the backsolve method, the Company estimated the average time to a potential liquidity event was 1.5 years based on management’s best estimates. The Company estimated that the liquidation value of its common shares in the bankruptcy scenario was $0. After applying a 30% DLOM, the resulting fair value of common stock was $0.59 per share on a non-controlling, non-marketable basis. The Company subsequently reexamined the deemed fair value of its common stock associated with stock options granted in December 2019 and February 2020 as discussed below under the heading “—Retrospective Fair Value Determinations.”

Retrospective Fair Value Determinations

In March 2020, in connection with the audit of the Company’s financial statements for the year ended December 31, 2019, the Company evaluated whether or not, in retrospect, the assumptions utilized for purposes of the August 2019, October 2019, December 2019 and February 2020 option grants were appropriate. In retrospect, the Company worked with its independent third-party valuation firm to revise the April 30, 2019 and November 30, 2019 valuations to increase the absolute weighting of the Successful scenario by 80% and 70%, respectively, which resulted in a concluded fair value of the common units/shares of $1.20 for the August 28 and October 3, 2019 option grants and $1.97 for the December 18, 2019, and February 11 and February 19, 2020 option grants. As a result, the Company recorded an immaterial amount of additional stock based compensation expense for the fiscal year ended December 31, 2019 and the increase in stock based compensation for the fiscal quarter ended March 31, 2020 was immaterial.

May 2020 Option Grants.

The Company’s Board of Directors, with input from management, determined the fair value of its common stock to be $4.18 per share as of May 15, 2020, after considering a valuation report from an independent third-party valuation firm as of April 30, 2020. In reaching this determination, the Board of Directors determined that no material changes had occurred in the business since the date of the third-party valuation report.

[***] Certain information in this document has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested by Avidity Biosciences, Inc. wit

Show Raw Text
CORRESP
1
filename1.htm

CORRESP

 12670 High Bluff Drive

 San Diego, California 92130

 Tel: +1.858.523.5400    Fax: +1.858.523.5450

 www.lw.com

 FIRM / AFFILIATE OFFICES

 Beijing

 Moscow

 Boston

 Munich

 Brussels

 New York

 Century City

 Orange County

 Chicago

 Paris

 Dubai

 Riyadh

FOIA CONFIDENTIAL TREATMENT REQUEST

 Düsseldorf

 Rome

 Frankfurt

 San Diego

 Hamburg

 San Francisco

 Hong Kong

 Seoul

 Houston

 Shanghai

 London

 Silicon Valley

 Los Angeles

 Singapore

 Madrid

 Tokyo

 Milan

 Washington, D.C.

 The entity requesting confidential treatment is:

Avidity Biosciences, Inc.

 10975 N. Torrey Pines Road, Suite 150

 La Jolla, CA 92037

 Attn: Sarah Boyce, President and Chief
Executive Officer

 May 26, 2020

 VIA EDGAR and
HAND DELIVERY

 Ms. Ada D. Sarmento

 Office
of Life Sciences

 Division of Corporation Finance

 U.S.
Securities and Exchange Commission

 100 F Street N.E.

Washington, D.C. 20549

Re:
 Avidity Biosciences, Inc. | Anticipated Price Range

 Registration Statement on Form S-1 (File No. 333-238612)

 Dear Ms. Sarmento:

Rule 83 Confidential Treatment Requested by Avidity Biosciences, Inc.

This letter is furnished supplementally on behalf of Avidity Biosciences, Inc. (the “Company”) in
connection with the review by the Securities and Exchange Commission (the “Commission”) of the above-mentioned Registration Statement on Form S-1 (the “Registration
Statement”). To assist the staff (the “Staff”) of the Commission in its review, the Company advises the Staff that it presently estimates, based in part on information received by the lead underwriters, that the
public offering price per share for the offering pursuant to the Registration Statement will be between $[***] and $[***] (without giving
effect to any reverse stock split that the Company will effect prior to the offering, the “Preliminary Price Range”), considering information currently available and current market conditions. For clarity, the Company advises
the Staff that, given the volatility of the public trading markets and the uncertainty of the timing

 [***] Certain
information in this document has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested by Avidity Biosciences, Inc. with respect to this letter.

 Securities and Exchange Commission

FOIA CONFIDENTIAL TREATMENT REQUEST

  Page
 2

of the offering, the Company and the lead underwriters have not yet finally agreed to a price range for the offering. The Company advises the Staff that the final range to be included in a pre-effective amendment to the Registration Statement, after giving effect to an appropriate reverse stock split, will include a price range of no more than $2.00 or 20% of the low end of the range, unless otherwise
approved by the Staff.

 Recent Stock Option Grants

The Company’s grants of stock options during the prior 12 months, including those made since the latest balance sheet
presented in the Registration Statement, are set forth below.

 Grant Date

Number of Shares
Underlying
Options Granted

Per Share
Exercise
Price of Options

Estimated
Fair Market
Value of Shares

Reassessed
Fair Market
Value of Shares

 August 28, 2019

40,228

$0.20

$0.20

$1.201

 October 3, 2019

286,000

$0.20

$0.20

$1.201

 December 18, 2019

2,775,105

$0.59

$0.59

$1.971

 February 11, 2020

700,000

$0.59

$0.59

$1.971

 February 19, 2020

1,177,313

$0.59

$0.59

$1.971

 May 15, 2020

715,000

$4.18

$4.18

N/A

(1)
 The Reassessed Fair Market Value Price represents a retrospective revaluation as further discussed below.

 Common Stock Valuation Methodologies

The Company has historically determined the fair value of its common stock using methodologies, approaches and assumptions
consistent with the American Institute of Certified Public Accountants Accounting and Valuation Guide, Valuation of Privately-Held-Company Equity Securities Issued as Compensation (the “AICPA Practice Guide”). In
addition, the Board of Directors considered numerous objective and subjective factors, along with input from management and third-party valuations, to determine the fair value of the Company’s common stock as further disclosed on pages 94-95 of the Registration Statement.

 For the options granted in August 2019 through
February 2020, the Company utilized the option-pricing method (“OPM”) with a guideline public company method and the backsolve method, as applicable, which are accepted valuation methods under the AICPA Practice Guide, for
determining the fair value of its common units/stock. The OPM treats a Company’s security classes as call options on total equity value, with exercise prices based on the relative seniority of payments among such security classes. The value of
junior equity interests under the OPM is based on the value of optionality over-and-above the value of securities that are senior to them in the capital structure. The
guideline public company method is a market approach that derives an implied total equity value by analyzing and comparing the market value and valuation multiples of comparable publicly traded life sciences companies. The backsolve method is a
market approach that derives an implied total equity value from the sale price of the Company’s equity securities in a recent arm’s length transaction. The Board of Directors and an independent third-party valuation firm determined that
the OPM and public company guideline method was the appropriate method for the Company’s valuations in August and October 2019 because the early stage of the Company’s development programs made it difficult to forecast specific future
liquidity

 [***] Certain information in this document has been
omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested by Avidity Biosciences, Inc. with respect to this letter.

 Securities and Exchange Commission

FOIA CONFIDENTIAL TREATMENT REQUEST

  Page
 3

events. The Board of Directors and an independent third-party valuation firm determined that the OPM backsolve method was the appropriate method for the Company’s valuations in December 2019
and February 2020 given the proximity to the arm’s length Series C convertible preferred stock financing (the “Series C Financing”), which had closings in November 2019 and January 2020. The Series C Financing was led by
new third-party investors in which the Company sold Series C convertible preferred stock at a price of $4.2812 per share raising gross proceeds of $102.8 million, which purchase price was determined in negotiations with such new investors.
After estimating the Company’s total equity value under these market approaches, that value was allocated to the various classes of the Company’s equity using the OPM. In each of these valuations, given the very early nature of the Company
and its technology and the high rate of failure for successfully commercializing drugs without additional technological validation, the Company incorporated the probability that the Company would not succeed and would go bankrupt, resulting in
liquidation (Bankruptcy scenario), versus the probability that the Company would successfully achieve such objectives (Successful scenario).

Beginning in April 2020, the Company utilized a hybrid of the probability-weighted expected return method
(“PWERM”) and OPM for determining the fair value of its common stock as estimates regarding potential future liquidity outcomes were considered reasonable following the Company’s submission on April 3, 2020 of a
draft registration statement on Form S-1 related to the Company’s initial public offering (the “IPO”). The PWERM is a scenario-based analysis that estimates the value per share
based on the probability-weighted present value of expected future investment returns, considering all of the possible outcomes available to the Company, as well as the economic and control rights of each share class. The Company considered three
future event scenarios in the PWERM model: an IPO, a non-IPO (an immediate stay private scenario with an ultimate exit) or bankruptcy. The hybrid method is a hybrid between the PWERM and OPM that uses the
PWERM to estimate the probability-weighted value across multiple scenarios and the OPM to estimate the allocation of value within one or more of those scenarios. The Company used the OPM to allocate value in the
non-IPO scenario and used the fully-diluted shares outstanding to allocate value in the IPO scenario.

The Company’s Board of Directors and management developed estimates based on the application of these approaches and the
assumptions underlying these valuations, giving careful consideration to independent third-party valuation reports. At each grant date, the Board of Directors considered whether any events occurred that would trigger any material changes to the
business or would require adjustment to the estimated fair value from the previous valuation date.

 In addition, in March
2020 in connection with the audit of the Company’s financial statements for the year ended December 31, 2019, the Company evaluated whether or not, in retrospect, the assumptions utilized for purposes of the August 2019, October 2019,
December 2019 and February 2020 option grants were appropriate, as discussed below under the heading “—Retrospective Fair Value Determinations.”

[***] Certain information in this document has been omitted and filed separately with the Securities and Exchange Commission. Confidential
treatment has been requested by Avidity Biosciences, Inc. with respect to this letter.

 Securities and Exchange Commission

FOIA CONFIDENTIAL TREATMENT REQUEST

  Page
 4

 Grant Date Fair Value Determinations

August and October 2019 Option Grants.

The Company’s Board of Directors, with input from management, determined the fair value of its common stock to be $0.20
per share as of August 28, 2019 and October 3, 2019, after considering a valuation report from an independent third-party valuation firm as of April 30, 2019. In reaching this determination, the Board of Directors determined that no
material changes had occurred in the business since the date of the third-party valuation report.

 As discussed above, the
April 30, 2019 valuation used the OPM guideline public company method to value the common stock because the early stage of the Company’s development programs made it difficult to forecast specific future liquidity events. Given the very
early nature of the Company and its technology and the expected liquidity event time period, as well as the relatively short time frame of its existing cash runway without another capital raise, the Company incorporated the probability that it would
go bankrupt, resulting in liquidation. The April 30, 2019 valuation established the following scenarios and probabilities:

 Scenario

Indicated
Value

Assigned
Weight

DLOM*

Weighted
Value Per
Unit/Share

 Successful

$1.01

20%

30%

$0.20

 Bankruptcy

$0

80%

0%

$0.00

 Concluded Fair Value

$0.20

*
 The DLOM was based on the Finnerty Put Option Analysis and consideration of various restricted stock
studies.

 The Company estimated the average time to a potential liquidity event was five years based on
management’s best estimates and it estimated that the liquidation value of its common units in the bankruptcy scenario (i.e. the net amount received by the Company if its assets were sold and liabilities were retired) was $0. After applying a
30% discount for lack of marketability (“DLOM”), the resulting fair value of common stock was $0.20 per share on a non-controlling,
non-marketable basis. The Company subsequently reexamined the deemed fair value of its common stock associated with stock options granted in August and October 2019 as discussed below under the heading
“—Retrospective Fair Value Determinations.”

 December 2019 and February 2020 Option Grants.

The Company’s Board of Directors, with input from management, determined the fair value of its common stock to be $0.59
per share as of December 18, 2019, February 11, 2020 and February 19, 2020, after considering a valuation report from an independent third-party valuation firm as of November 30, 2019. In reaching this determination, the Board of
Directors determined that no material changes had occurred in the business since the date of the third-party valuation report.

[***] Certain information in this document has been omitted and filed separately with the Securities and Exchange Commission. Confidential
treatment has been requested by Avidity Biosciences, Inc. with respect to this letter.

 Securities and Exchange Commission

FOIA CONFIDENTIAL TREATMENT REQUEST

  Page
 5

 As discussed above, the November 30, 2019 valuation used the OPM
backsolve method to value the common stock because of the proximity to the Series C Financing, which had an initial closing and a subsequent closing in November 2019 and January 2020, respectively. Similar to the prior valuations, given the very
early nature of the Company and its technology and the high failure rate of early-stage pharmaceutical companies, after taking into account the cash runway provided by the Series C Financing and the need for additional capital raises, the Company
established the following scenarios and probabilities:

 Scenario

Indicated
Value

Assigned
Weight

DLOM*

Weighted
Value Per
Unit/Share

 Successful

$1.97

30%

30%

$0.59

 Bankruptcy

$0

70%

0%

$0.00

 Concluded Fair Value

$0.59

*
 The DLOM was based on the Finnerty Put Option Analysis and consideration of various restricted stock
studies.

 Under the backsolve method, the Company estimated the average time to a potential liquidity
event was 1.5 years based on management’s best estimates. The Company estimated that the liquidation value of its common shares in the bankruptcy scenario was $0. After applying a 30% DLOM, the resulting fair value of common stock was $0.59 per
share on a non-controlling, non-marketable basis. The Company subsequently reexamined the deemed fair value of its common stock associated with stock options granted in
December 2019 and February 2020 as discussed below under the heading “—Retrospective Fair Value Determinations.”

Retrospective Fair Value Determinations

In March 2020, in connection with the audit of the Company’s financial statements for the year ended December 31,
2019, the Company evaluated whether or not, in retrospect, the assumptions utilized for purposes of the August 2019, October 2019, December 2019 and February 2020 option grants were appropriate. In retrospect, the Company worked with its independent
third-party valuation firm to revise the April 30, 2019 and November 30, 2019 valuations to increase the absolute weighting of the Successful scenario by 80% and 70%, respectively, which resulted in a concluded fair value of the common
units/shares of $1.20 for the August 28 and October 3, 2019 option grants and $1.97 for the December 18, 2019, and February 11 and February 19, 2020 option grants. As a result, the Company recorded an immaterial amount of
additional stock based compensation expense for the fiscal year ended December 31, 2019 and the increase in stock based compensation for the fiscal quarter ended March 31, 2020 was immaterial.

May 2020 Option Grants.

The Company’s Board of Directors, with input from management, determined the fair value of its common stock to be $4.18
per share as of May 15, 2020, after considering a valuation report from an independent third-party valuation firm as of April 30, 2020. In reaching this determination, the Board of Directors determined that no material changes had occurred
in the business since the date of the third-party valuation report.

[***] Certain information in this document has been omitted and filed separately with the Securities and Exchange Commission. Confidential
treatment has been requested by Avidity Biosciences, Inc. wit