Dyne Therapeutics, Inc.
US ˙ NasdaqGS ˙ US26818M1080

SecurityDYN / Dyne Therapeutics, Inc.
InstitutionUBS Group AG
Latest Disclosed Ownership380,561 shares
Latest Disclosed Value $ 6,899,571
UBS Group AG reports 0.11% decrease in ownership of DYN / Dyne Therapeutics, Inc.

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 380,561 shares of Dyne Therapeutics, Inc. (US:DYN) valued at $6,899,571 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 380,978 shares of Dyne Therapeutics, Inc.. This represents a change in shares of -0.11% during the quarter. The current value of the position is $6,846,292 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-05 2026-03-31 13F DYNE THERAPEUTICS COM 26818M108 380,561 -417 -0.11 6,900 -7.41 0.0002
2026-01-29 2025-12-31 13F DYNE THERAPEUTICS COM 26818M108 380,978 31,590 9.04 7,452 68.61 0.0002
2025-11-13 2025-09-30 13F DYNE THERAPEUTICS COM 26818M108 349,388 227,596 186.87 4,420 281.28 0.0007
2025-08-14 2025-06-30 13F DYNE THERAPEUTICS COM 26818M108 121,792 -235,962 -65.96 1,159 -69.03 0.0002
2025-05-13 2025-03-31 13F DYNE THERAPEUTICS COM 26818M108 357,754 -182,358 -33.76 3,742 -70.59 0.0007
2025-02-14 2024-12-31 13F DYNE THERAPEUTICS COM 26818M108 540,112 -85,607 -13.68 12,725 -43.38 0.0024
2024-11-14 2024-09-30 13F DYNE THERAPEUTICS COM 26818M108 625,719 381,790 156.52 22,476 161.09 0.0049
2024-08-14 2024-06-30 13F DYNE THERAPEUTICS COM 26818M108 243,929 10,602 4.54 8,608 29.95 0.0021
2024-05-13 2024-03-31 13F DYNE THERAPEUTICS COM 26818M108 233,327 109,277 88.09 6,624 301.70 0.0016
2024-02-09 2023-12-31 13F DYNE THERAPEUTICS COM 26818M108 124,050 69,892 129.05 1,650 240.00 0.0005
2023-11-09 2023-09-30 13F DYNE THERAPEUTICS COM 26818M108 54,158 31,589 139.97 485 91.70 0.0002
2023-08-11 2023-06-30 13F DYNE THERAPEUTICS COM 26818M108 22,569 21,120 1,457.56 254 1,481.25 0.0001
2023-05-12 2023-03-31 13F DYNE THERAPEUTICS COM 26818M108 1,449 -8,127 -84.87 17 -85.45 0.0000
2023-02-08 2022-12-31 13F DYNE THERAPEUTICS COM 26818M108 9,576 8,530 815.49 111 746.15 0.0000
2022-11-10 2022-09-30 13F DYNE THERAPEUTICS COM 26818M108 1,046 16 1.55 13 85.71 0.0000
2022-08-10 2022-06-30 13F DYNE THERAPEUTICS COM 26818M108 1,030 -9,142 -89.87 7 -92.86 0.0000
2022-05-16 2022-03-31 13F DYNE THERAPEUTICS COM 26818M108 10,172 9,760 2,368.93 98 1,860.00 0.0000
2022-02-14 2021-12-31 13F DYNE THERAPEUTICS COM 26818M108 412 387 1,548.00 5 0.0000
2021-11-15 2021-09-30 13F DYNE THERAPEUTICS COM 26818M108 25 25 0 0.0000
2021-08-13 2021-06-30 13F DYNE THERAPEUTICS COM 26818M108 0 -3,278 -100.00 0 -100.00
2021-05-12 2021-03-31 13F DYNE THERAPEUTICS COM 26818M108 3,278 -6,682 -67.09 51 -75.60 0.0000
2021-02-11 2020-12-31 13F DYNE THERAPEUTICS COM 26818M108 9,960 9,960 209 0.0001
2018-08-14 2018-06-30 13F DYNEGY INC NEW DEL *W EXP 02/02/202 26817R157 0 -13,218 -100.00 0 -100.00
2018-05-15 2018-03-31 13F DYNEGY INC NEW DEL *W EXP 02/02/202 26817R157 13,218 326 2.53 3 0.00 0.0000
2018-02-14 2017-12-31 13F DYNEGY INC NEW DEL *W EXP 02/02/202 26817R157 12,892 3,057 31.08 3 50.00 0.0000
2017-11-14 2017-09-30 13F DYNEGY INC NEW DEL *W EXP 02/02/202 26817R157 9,835 9,532 3,145.87 2 -86.67 0.0000
2017-11-14 2017-06-30 13F/A-1 DYNEGY INC NEW DEL *W EXP 02/02/202 26817R157 303 -1,852 -85.94 0 -100.00 0.0000
2017-11-14 2017-06-30 13F/A-1 DYNEGY INC NEW DEL *W EXP 10/02/201 26817R116 33,000 32,697 2 0.0000
2017-08-14 2017-06-30 13F DYNEGY INC NEW DEL *W EXP 02/02/202 26817R157 303 -32,697 0
2017-08-14 2017-06-30 13F DYNEGY INC NEW DEL *W EXP 10/02/201 26817R116 33,000 31,214 2
2017-11-14 2017-03-31 13F/A-1 DYNEGY INC NEW DEL *W EXP 10/02/201 26817R116 2,155 239 12.47 0 -100.00 0.0000
2017-11-14 2017-03-31 13F/A-1 DYNEGY INC NEW DEL *W EXP 02/02/202 26817R157 290 -1,865 0 0.0000
2017-05-12 2017-03-31 13F DYNEGY INC NEW DEL *W EXP 10/02/201 26817R116 2,155 1,865 0
2017-05-12 2017-03-31 13F DYNEGY INC NEW DEL *W EXP 02/02/202 26817R157 290 -792 0
2017-02-14 2016-12-31 13F DYNEGY INC NEW DEL *W EXP 10/02/201 26817R116 1,916 271 16.47 0 -100.00 0.0000
2016-11-14 2016-09-30 13F DYNEGY INC NEW DEL *W EXP 10/02/201 26817R116 1,645 738 81.37 0 -100.00 0.0000
2016-08-12 2016-06-30 13F DYNEGY INC NEW DEL *W EXP 10/02/201 26817R116 907 -782 -46.30 0 -100.00
2016-05-12 2016-03-31 13F DYNEGY INC NEW DEL *W EXP 10/02/201 26817R116 1,689 215 14.59 1 0.00 0.0000
2016-02-16 2015-12-31 13F DYNEGY INC NEW DEL *W EXP 10/02/201 26817R116 1,474 -303 -17.05 1 -50.00 0.0000
2015-11-13 2015-09-30 13F DYNEGY INC NEW DEL *W EXP 10/02/201 26817R116 1,777 -1,112 -38.49 2 -83.33 0.0000
2015-08-14 2015-06-30 13F DYNEGY INC NEW DEL *W EXP 10/02/201 26817R116 2,889 -2,224 -43.50 12 -45.45 0.0000
2015-05-14 2015-03-31 13F DYNEGY INC NEW DEL *W EXP 10/02/201 26817R116 5,113 1,375 36.78 22 46.67 0.0000
2015-02-17 2014-12-31 13F DYNEGY INC NEW DEL *W EXP 10/02/201 26817R116 3,738 3,738 15 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.