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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
2023-06-09 Brumm Joshua T See Remarks Option exercise +76,582 $1.03 $79K 346,353
2023-06-09 Brumm Joshua T See Remarks Sale −76,582 $13.34 $1.0M 269,771
2023-06-09 Brumm Joshua T See Remarks Option exercise · Stock Option (right to buy) −76,582 241,079
2023-06-08 Brumm Joshua T See Remarks Gift −20,000 302,483
2023-06-08 Brumm Joshua T See Remarks Gift −1,800 300,683
2023-06-08 Brumm Joshua T See Remarks Option exercise +30,088 $1.03 $31K 330,771
2023-06-08 Brumm Joshua T See Remarks Sale −46,811 $13.15 $616K 283,960
2023-06-08 Brumm Joshua T See Remarks Sale −14,189 $13.47 $191K 269,771
2023-06-08 Brumm Joshua T See Remarks Option exercise · Stock Option (right to buy) −30,088 317,661
2023-05-24 Stehman-Breen Catherine Director Grant or award · Stock Option (right to buy) +24,900 24,900
2023-05-24 Rhodes Jason P Director Grant or award · Stock Option (right to buy) +24,900 24,900
2023-05-24 Lubner David Charles Director Grant or award · Stock Option (right to buy) +24,900 24,900
2023-05-24 Kersten Dirk Director Grant or award · Stock Option (right to buy) +24,900 24,900
2023-05-24 Incerti Carlo Director Grant or award · Stock Option (right to buy) +24,900 24,900
2023-05-24 HURWITZ EDWARD Director Grant or award · Stock Option (right to buy) +24,900 24,900
2023-03-14 Scalzo Richard William See Remarks Sale −1,311 $13.33 $17K 54,872
2023-03-14 McNeill Jonathan See Remarks Sale −1,209 $13.33 $16K 65,391
2023-03-14 HIGH SUSANNA GATTI Chief Operating Officer Sale −1,559 $13.33 $21K 110,476
2023-03-14 Farwell Wildon Chief Medical Officer Sale −7,441 $13.33 $99K 92,655
2023-03-14 Brumm Joshua T See Remarks Sale −7,318 $13.33 $98K 322,483

Page 31 of 36 · 718 trades