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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
2023-09-12 Farwell Wildon Chief Medical Officer Sale −1,707 $10.41 $18K 89,250
2023-09-12 Scalzo Richard William See Remarks Sale −1,397 $10.41 $15K 42,085
2023-09-12 McNeill Jonathan Chief Business Officer Sale 10b5-1 −1,266 $10.41 $13K 61,866
2023-09-12 HIGH SUSANNA GATTI Chief Operating Officer Sale −1,635 $10.41 $17K 107,216
2023-09-12 Brumm Joshua T See Remarks Sale −7,672 $10.41 $80K 245,711
2023-09-12 Beskrovnaya Oxana Chief Scientific Officer Sale −1,484 $10.41 $15K 85,770
2023-07-11 McNeill Jonathan Chief Business Officer Grant or award · Stock option (right to buy) +35,000 35,000
2023-06-15 Scalzo Richard William See Remarks Sale −10,000 $12.03 $120K 43,482
2023-06-13 Scalzo Richard William See Remarks Sale −1,390 $12.43 $17K 53,482
2023-06-13 Scalzo Richard William See Remarks Option exercise +40,000 $1.03 $41K 93,482
2023-06-13 Scalzo Richard William See Remarks Sale −40,000 $12.89 $516K 53,482
2023-06-13 Scalzo Richard William See Remarks Option exercise · Stock Option (right to buy) −40,000 38,740
2023-06-13 McNeill Jonathan See Remarks Sale 10b5-1 −1,259 $12.43 $16K 63,132
2023-06-13 HIGH SUSANNA GATTI Chief Operating Officer Sale −1,625 $12.43 $20K 108,851
2023-06-13 Farwell Wildon Chief Medical Officer Sale −1,698 $12.43 $21K 90,957
2023-06-13 Beskrovnaya Oxana Chief Scientific Officer Sale −1,475 $12.43 $18K 87,254
2023-06-12 McNeill Jonathan See Remarks Sale 10b5-1 −1,000 $13.00 $13K 64,391
2023-06-12 Brumm Joshua T See Remarks Option exercise +171,360 $1.03 $177K 441,131
2023-06-12 Brumm Joshua T See Remarks Sale −187,748 $12.61 $2.4M 253,383
2023-06-12 Brumm Joshua T See Remarks Option exercise · Stock Option (right to buy) −171,360 69,719

Page 30 of 36 · 718 trades