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SEC FORM 3 SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
 
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1. Name and Address of Reporting Person*
Scalzo Richard William

(Last) (First) (Middle)
C/O DYNE THERAPEUTICS, INC.
830 WINTER STREET

(Street)
WALTHAM MA 02451

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
09/16/2020
3. Issuer Name and Ticker or Trading Symbol
Dyne Therapeutics, Inc. [ DYN ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
See Remarks
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (right to buy) (1) 01/05/2030 Common Stock 78,740 1.03 D
Stock Option (right to buy) (2) 07/30/2030 Common Stock 26,775 5.54 D
Stock Option (right to buy) (3) 07/30/2030 Common Stock 51,999 5.54 D
Explanation of Responses:
1. The option was granted on January 6, 2020. The shares underlying the option vest over four years, with 25% of the shares vesting on December 2, 2020 and the remaining shares vesting in equal quarterly installments thereafter.
2. The option was granted on July 31, 2020. The shares underlying the option vest over four years in equal quarterly installments through July 31, 2024, provided that no shares shall vest prior to December 2, 2020.
3. The option was granted on July 31, 2020. The shares underlying the option vest over four years in equal quarterly installments through July 31, 2024, provided that no shares shall vest prior to December 2, 2020.
Remarks:
Vice President of Accounting and Administration and Treasurer Exhibit Index: 24.1 Power of Attorney
/s/ Richard Scalzo 09/16/2020
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
                                                                    Exhibit 24.1

             LIMITED POWER OF ATTORNEY FOR SECTION 16 REPORTING OBLIGATIONS

        Know all by these presents, that the undersigned hereby makes,
constitutes and appoints Joshua Brumm, signing singly and acting individually,
as the undersigned's true and lawful attorney-in-fact with full power and
authority as hereinafter described to:

        (1)    execute for and on behalf of the undersigned, in the
undersigned's capacity as an officer, director and/or stockholder of Dyne
Therapeutics, Inc. (the "Company"), Forms 3, 4, and 5 (including any amendments
thereto) in accordance with Section 16(a) of the Securities Exchange Act of
1934, as amended, and the rules thereunder (the "Exchange Act");

        (2)    do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to prepare, complete and execute
any such Form 3, 4, or 5, prepare, complete and execute any amendment or
amendments thereto, and timely deliver and file such form with the United States
Securities and Exchange Commission (the "SEC") and any stock exchange or similar
authority, including, without limitation, the filing of a Form ID, Update
Passphrase, or any other application materials to enable the undersigned to gain
or maintain access to the Electronic Data Gathering, Analysis and Retrieval
system of the SEC;

        (3)    seek or obtain, as the undersigned's representative and on the
undersigned's behalf, information regarding transactions in the Company's
securities from any third party, including brokers, employee benefit plan
administrators and trustees, and the undersigned hereby authorizes any such
person to release any such information to such attorney-in-fact and approves and
ratifies any such release of information; and

        (4)    take any other action of any type whatsoever in connection with
the foregoing which, in the opinion of such attorney-in-fact, may be of benefit
to, in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney-in-fact on behalf of the
undersigned pursuant to this Power of Attorney shall be in such form and shall
contain such terms and conditions as such attorney-in-fact may approve in such
attorney-in-fact's discretion.

        The undersigned hereby grants to such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this power of attorney and the rights and powers herein
granted.  The undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned, is not assuming nor
relieving, nor is the Company assuming nor relieving, any of the undersigned's
responsibilities to comply with Section 16 of the Exchange Act.  The undersigned
acknowledges that neither the Company nor the foregoing attorneys-in-fact assume
(i) any liability for the undersigned's responsibility to comply with the
requirement of the Exchange Act, (ii) any liability of the undersigned for any
failure to comply with such requirements, or (iii) any obligation or liability
of the undersigned for profit disgorgement under Section 16(b) of the Exchange
Act.

        This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4, and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact.

        IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 11th day of September, 2020.

                                        /s/ Richard Scalzo
                                        ---------------------------------
                                        Signature


                                        Richard Scalzo
                                        ---------------------------------
                                        Print Name