Dyne Therapeutics, Inc.
US ˙ NasdaqGS ˙ US26818M1080

SecurityDYN / Dyne Therapeutics, Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership24,420 shares
Latest Disclosed Value $ 442,735
Engineers Gate Manager LP reports 12.96% increase in ownership of DYN / Dyne Therapeutics, Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 24,420 shares of Dyne Therapeutics, Inc. (US:DYN) valued at $442,735 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 21,619 shares of Dyne Therapeutics, Inc.. This represents a change in shares of 12.96% during the quarter. The current value of the position is $439,316 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)
2026-05-15 2026-03-31 13F DYNE THERAPEUTICS COM 26818M108 24,420 2,801 12.96 443 4.74 0.0055
2026-02-17 2025-12-31 13F DYNE THERAPEUTICS COM 26818M108 21,619 -81,372 -79.01 423 -67.59 0.0050
2025-11-14 2025-09-30 13F DYNE THERAPEUTICS COM 26818M108 102,991 -69,478 -40.28 1,303 -20.66 0.0149
2025-08-14 2025-06-30 13F DYNE THERAPEUTICS COM 26818M108 172,469 87,551 103.10 1,642 84.80 0.0204
2025-05-15 2025-03-31 13F DYNE THERAPEUTICS COM 26818M108 84,918 84,918 888 0.0150
2025-02-14 2024-12-31 13F DYNE THERAPEUTICS COM 26818M108 0 -9,776 -100.00 0 -100.00
2024-11-14 2024-09-30 13F DYNE THERAPEUTICS COM 26818M108 9,776 9,776 351 0.0069
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.