Transaction · 0001591747-26-000005

Bitterman Kevin

Bitterman Kevin, DIR, reported an open-market or private sale at Disc Medicine, Inc. involving 18.000000 shares for an estimated $1439.28. Reported holdings after the transaction were 13427.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SDIR
IRONDisc Medicine, Inc.
Trade date
Sep 04, 2026
Filing date
Sep 09, 2026
View on SEC Insider profile
Estimated value-$1.43kShares × reported price
Shares traded18$79.96 per share
Holdings after13.4kIndirect · See footnote
% of reported position traded0.13%This security and ownership context
How reported position traded is calculated

Shares sold ÷ (holdings after + shares sold). Estimated position before: 13,445 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

IRON price since this filing

Daily closing prices, with the filing date and available return windows
IRON · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago +3.1%1w ago +4.6%1d ago +3.7%
Returns since7d -10.4%30d -18.9%90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001591747-26-000005
Common Stock
Transaction date
Sep 04, 2026
Filed Sep 09, 2026, 08:23 PM · 5d delay
Shares
18 sh
$79.96 per share
Estimated value
-$1.43k
Computed from shares × price
Holdings after
13,427 sh
Indirect · See footnote

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Cluster Selling Repeat Seller 10b5-1 Detected
Filing-only score

-10 points

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

How this score is calculated
  • tenb5_1_detected-10 points

    is_10b5_1 = true

    Stored filing content includes detected 10b5-1 language.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

No officer title

Officer NoDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    Shares were sold pursuant to a Rule 10b5-1 trading plan adopted on July 30, 2026.

  2. F2

    The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.95 to $79.98 inclusive. The Reporting Person undertakes to provid…

  3. F3F4F5(3 footnotes)

    These shares are held by Atlas Venture Opportunity Fund I, L.P. ("Opportunity I"). The general partner of Opportunity I is Atlas Venture Associates Opportunity I, L.P. ("Associates I"). Atlas Venture…

Original filing · 0001591747-26-000005
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