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CIK 0001818794 · Large accelerated filer

Dyne Therapeutics, Inc.

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Ticker
DYN
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
364883909
Phone
(781) 786-8230
Business address
1560 TRAPELO ROAD, WALTHAM, MA, 02451
Open-market buys, last 90 days
$40,000
in 1 filing
Open-market sales, last 90 days
$247,777
in 3 filings, $248K under 10b5-1 plans

Net −$207,777. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. Kerr Douglas −$116K Chief Medical Officer sold 3% of stake
  2. Cox John −$107K CEO & President sold 2% of stake
  3. Posner Brian S +$40K Director 1 filing
  4. Friedl-Naderer Johanna −$25K Chief Commercial Officer sold <1% of stake

Reading 31 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2022-09-15 Scalzo Richard William See Remarks Returned to the company −326 $14.05 $5K 26,335
2022-09-15 Farwell Wildon Chief Medical Officer Returned to the company −658 $14.05 $9K 64,724
2022-09-15 McNeill Jonathan See Remarks Returned to the company −494 $14.05 $7K 59,468
2022-09-15 HIGH SUSANNA GATTI Chief Operating Officer Returned to the company −786 $14.05 $11K 71,415
2022-09-15 Brumm Joshua T See Remarks Returned to the company −3,480 $14.05 $49K 216,459
2022-09-15 Beskrovnaya Oxana Chief Scientific Officer Returned to the company −712 $14.05 $10K 52,238
2022-07-11 Scalzo Richard William See Remarks Grant or award · Stock Option (right to buy) +55,000 55,000
2022-07-06 Brumm Joshua T See Remarks Returned to the company −10,963 $8.24 $90K 219,939
2022-07-05 Stehman-Breen Catherine Director Grant or award · Stock Option (right to buy) +7,222 7,222
2022-07-05 Scalzo Richard William See Remarks Grant or award · Stock Option (right to buy) +17,333 17,333
2022-07-05 McNeill Jonathan See Remarks Grant or award · Stock Option (right to buy) +21,666 21,666
2022-07-05 Lubner David Charles Director Grant or award · Stock Option (right to buy) +7,222 7,222
2022-07-05 Klein Lawrence Otto Director Grant or award · Stock Option (right to buy) +7,222 7,222
2022-07-05 HIGH SUSANNA GATTI Chief Operating Officer Grant or award · Stock Option (right to buy) +36,219 36,219
2022-07-05 Brumm Joshua T See Remarks Grant or award +24,118 230,902
2022-07-05 Brumm Joshua T See Remarks Grant or award · Stock Option (right to buy) +153,931 153,931
2022-07-05 Brumm Joshua T See Remarks Grant or award · Stock Option (right to buy) +78,386 78,386
2022-07-05 Beskrovnaya Oxana Chief Scientific Officer Grant or award · Stock Option (right to buy) +23,477 23,477
2022-06-14 Scalzo Richard William See Remarks Returned to the company −333 $4.95 $2K 26,661
2022-06-14 McNeill Jonathan See Remarks Returned to the company −504 $4.95 $2K 59,962

Page 34 of 36 · 718 trades