Transaction · 0001501697-26-000078

KIRSKE DAVID

KIRSKE DAVID, CFO, reported an open-market or private sale at X4 Pharmaceuticals, Inc involving 11767.000000 shares for an estimated $33658.33. Reported holdings after the transaction were 155983.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

Open-market sellSEC transaction code SCFO
XFORX4 Pharmaceuticals, Inc
Filing timeOct 05
Trade dateOct 01, 2026
Filing · SECView on SEC
InsiderProfile
% of reported position traded7.01%Shares sold ÷ (holdings after + shares sold). Estimated position before: 167,750 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.

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$4.14
Pre-filing
1mo ago +0.0%1w ago +0.0%1d ago +0.0%
Returns since
7d30d90d180d1y

XFOR price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
XFOR since 2026-10-05Filed today · pre-filing context shaded
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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
0001501697-26-000078
Common Stock
Transaction date
Oct 01, 2026
Filed Oct 05, 2026, 08:03 PM · 4d delay
Shares
11.7k sh
$2.86 per share
Estimated value
-$33.6k
Computed from shares × price
Holdings after
155k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Direct Ownership
+6score
Filing-only score

+6

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

Positive filing signal

This filing has a modest positive filing-only score. Treat it as a useful flag for review, not as a buy signal.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chief Financial Officer

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    Sale of shares to cover personal income tax obligation upon settlement of restricted stock unit award.

  2. F2

    The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $2.82 to $2.92, inclusive. The Reporting Person undertakes to provide the Issue…

  3. F3

    Of the shares of common stock reported, 64,418 shares represent restricted stock units.

Original filing · 0001501697-26-000078
Related transactions

0 other filings

Same reporting owner
Recent company activity

0 recent txs

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