DYN · Dyne Therapeutics, Inc.

Filed

Date the Form 4 was filed with the SEC. Insiders must file within 2 business days of the trade.

Ticker

The issuer's stock symbol. Select it to open that company's insider-activity page.

Issuer

The company whose shares were traded.

Sector

The issuer's industry (SEC SIC classification). Select a value to filter to that sector.

Insider

The reporting person: an officer, director, or 10% owner. Select a name to see all of their trades.

Role

The insider's relationship to the company: director, officer, or 10% owner.

Code

SEC transaction code describing the kind of transaction. Full official definitions are under “Transaction codes” below. A dot marks an open-market trade (P/S), the highest-conviction signal.

Side

Direction of the trade, from the filing's Acquired (A) ▲ / Disposed of (D) ▼ field: a buy or a sell.

10b5-1

Trade made under a pre-arranged Rule 10b5-1 plan: scheduled in advance, not a discretionary decision (generally lower signal).

Shares

Number of shares in this transaction.

Price

Reported price per share. Blank for grants, gifts, and other trades with no stated price.

Value

Transaction value = shares × price. Left blank for grants, option exercises, gifts, and conversions, which have no cash price (see Own Δ for their impact).

Owned after

Form 4 column “Amount of Securities Beneficially Owned Following Reported Transaction(s)”: shares the insider held (directly or indirectly) immediately after this trade.

Own Δ

How much this trade changed the insider's own holding versus what they held just before it (not a share of the company). +45% grew it by 45%, 2.0× more than doubled it, −100% sold the entire stake, “new” built a position from nothing.

Co. Δ

Change in the insider's stake as a share of the whole company from this trade (transaction shares ÷ shares outstanding). The “(now …)” figure is their resulting total stake. Based on the latest reported shares outstanding; blank when unavailable.

D/I

Form 4 column “Ownership Form: Direct (D) or Indirect (I)”. Indirect holdings (for example, through a trust, fund, or family member) are detailed in the filing's “Nature of Indirect Beneficial Ownership.”

Lag

Days from the trade date to the filing date (Form 4 is due within 2 business days).

Transaction codes

Verbatim from the SEC's General Instructions for Forms 3, 4 and 5.

P

Open market or private purchase of non-derivative or derivative security

S

Open market or private sale of non-derivative or derivative security

A

Grant, award or other acquisition pursuant to Rule 16b-3(d)

D

Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)

F

Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3

M

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

G

Bona fide gift

C

Conversion of derivative security

X

Exercise of in-the-money or at-the-money derivative security

J

Other acquisition or disposition (describe transaction)