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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
2022-12-09 HIGH SUSANNA GATTI Chief Operating Officer Grant or award · Stock Option (right to buy) +69,000 69,000
2022-12-09 Farwell Wildon Chief Medical Officer Grant or award +36,000 100,724
2022-12-09 Farwell Wildon Chief Medical Officer Grant or award · Stock option (right to buy) +56,000 56,000
2022-12-09 Brumm Joshua T See Remarks Grant or award +144,000 333,123
2022-12-09 Brumm Joshua T See Remarks Grant or award · Stock Option (right to buy) +222,000 222,000
2022-12-09 Beskrovnaya Oxana Chief Scientific Officer Grant or award +40,000 90,825
2022-12-09 Beskrovnaya Oxana Chief Scientific Officer Grant or award · Stock Option (right to buy) +63,000 63,000
2022-10-10 Brumm Joshua T See Remarks Option exercise +195,800 $1.03 $202K 400,423
2022-10-10 Brumm Joshua T See Remarks Sale −195,800 $12.46 $2.4M 204,623
2022-10-10 Brumm Joshua T See Remarks Gift −13,000 191,623
2022-10-10 Brumm Joshua T See Remarks Gift −2,500 189,123
2022-10-10 Brumm Joshua T See Remarks Option exercise · Stock Option (right to buy) −195,800 347,749
2022-10-07 Brumm Joshua T See Remarks Option exercise +14,200 $1.03 $15K 218,823
2022-10-07 Brumm Joshua T See Remarks Sale −14,200 $13.37 $190K 204,623
2022-10-07 Brumm Joshua T See Remarks Option exercise · Stock Option (right to buy) −14,200 543,549
2022-09-20 Scalzo Richard William See Remarks Returned to the company −840 $13.70 $12K 25,495
2022-09-20 McNeill Jonathan See Remarks Returned to the company −1,246 $13.70 $17K 58,222
2022-09-20 HIGH SUSANNA GATTI Chief Operating Officer Returned to the company −2,629 $13.70 $36K 68,786
2022-09-20 Brumm Joshua T See Remarks Returned to the company −11,836 $13.70 $162K 204,623
2022-09-20 Beskrovnaya Oxana Chief Scientific Officer Returned to the company −1,413 $13.70 $19K 50,825

Page 33 of 36 · 718 trades