Transaction · 0001591747-26-000002

Bitterman Kevin

Bitterman Kevin, DIR, reported an open-market or private sale at Disc Medicine, Inc. involving 10.000000 shares for an estimated $809.80. Reported holdings after the transaction were 322588.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SDIR
IRONDisc Medicine, Inc.
Filing timeSep 03
Trade dateSep 02, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$79.37
Pre-filing
1mo ago -3.9%1w ago +4.2%1d ago -0.9%
Returns since
7d +0.0%30d +0.0%90d +0.0%180d +0.0%1y +0.0%

IRON price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
IRON since 2026-09-03Filed yesterday · 1 day of post-filing data
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001591747-26-000002
Common Stock
Transaction date
Sep 02, 2026
Filed Sep 03, 2026, 09:43 PM · 1d delay
Shares
10 sh
$8.09k per share
Estimated value
-$80.9k
Computed from shares × price
Holdings after
322k sh
Indirect · See footnote

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Cluster Selling Repeat Seller 10b5-1 Detected
-6score
Filing-only score

-6

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.

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. F2F3F4(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…

  3. F5

    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 $80.9421 inclusive. The Reporting Person undertakes to prov…

  4. F6

    The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.9677 to $81.0079 inclusive. The Reporting Person undertakes to pr…

  5. F7

    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 $80.28 inclusive. The Reporting Person undertakes to provid…

Original filing · 0001591747-26-000002
Related transactions

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Same reporting owner
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