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4D Molecular Therapeutics ($FDMT) Insider Trading & Smart Money Activity

4D Molecular Therapeutics, Inc. · Biotechnology · Latest filing Oct 5, 2026

4D Molecular Therapeutics, Inc. ($FDMT) has 19 insider trades on file. In the last 12 months on the open market, no insider bought and 3 insiders sold ($1.98M), net -$1.98M.

Insider buyers (12 mo)
0
Insider sellers (12 mo)
3
Net insider $ (12 mo)
-$1.98M
Congress trades (12 mo)
0
13F moves on file
0
Analyst ratings on file
0

FDMT insider buying and selling by quarter

QuarterInsider buysInsider salesCongress buys / sales13F added / cut
Q1 2026 0 0 0 / 0 0 / 0
Q2 2026 0 1 · $1.20M 0 / 0 0 / 0
Q3 2026 0 1 · $22.32K 0 / 0 0 / 0
Q4 2026 0 1 · $753.94K 0 / 0 0 / 0

Insider buys and sales count open-market trades only (Form 4 codes P and S). Grants, option exercises and tax withholding are left out.

All FDMT insider, congress, 13F and analyst activity

DateSourceWhoActionSharesValue / amount ΔOwn1W1M6MFilingStory
Insider Kirn DavidPresident and Chief Executive Officer Sell (Open-market sale) 10b5-1 58.33K sh $753.94K +0.6% —
Insider Bizily ScottChief Legal Officer Sell (Open-market sale) 10b5-1 1.64K sh $22.32K +9.0%-11.8% —
Insider Scott BizilyChief Legal Officer Sell (Option exercise) 9.81K sh +14.7%-10.5% —
Insider Scott BizilyChief Legal Officer Buy (Option exercise) 9.81K sh $40.61K +14.7%-10.5% —
Insider David KirnPresident and Chief Executive Officer Sell (Open-market sale) 10b5-1 114.75K sh $1.20M +23.6%+5.2% —
Insider Shawn Tomasello Buy (Grant or award) 50K sh +23.4%+16.7% Read
Insider Shawn Tomasello Buy (Grant or award) 50K sh +23.4%+16.7% Read
Insider Charles Theuer Buy (Grant or award) 50K sh +23.4%+16.7% —
Insider Charles Theuer Buy (Grant or award) 50K sh +23.4%+16.7% Read
Insider Glenn Sblendorio Buy (Grant or award) 50K sh +23.4%+16.7% —
Insider Glenn Sblendorio Buy (Grant or award) 50K sh +23.4%+16.7% Read
Insider John Milligan Buy (Grant or award) 75K sh +23.4%+16.7% —
Insider John Milligan Buy (Grant or award) 75K sh +23.4%+16.7% Read
Insider Nancy Miller-Rich Buy (Grant or award) 50K sh +23.4%+16.7% Read
Insider Nancy Miller-Rich Buy (Grant or award) 50K sh +23.4%+16.7% Read
Insider Susannah Gray Buy (Grant or award) 50K sh +23.4%+16.7% —
Insider Susannah Gray Buy (Grant or award) 50K sh +23.4%+16.7% Read
Insider Jacob Chacko Buy (Grant or award) 50K sh +23.4%+16.7% Read
Insider Jacob Chacko Buy (Grant or award) 50K sh +23.4%+16.7% Read

1W / 1M / 6M = how FDMT moved from the trade or filing date.

Insider trading in FDMT: who is buying and selling

InsiderRoleTradesOpen-market netShares heldLast trade
Kirn David President and Chief Executive Officer 1 -$753.94K Oct 5, 2026
Bizily Scott Chief Legal Officer 1 -$22.32K Sep 16, 2026
Scott Bizily Chief Legal Officer 2 — Jun 23, 2026
David Kirn President and Chief Executive Officer 1 -$1.20M Jun 22, 2026
Shawn Tomasello 2 — Jun 17, 2026
Charles Theuer 2 — Jun 17, 2026
Glenn Sblendorio 2 — Jun 17, 2026
John Milligan 2 — Jun 17, 2026
Nancy Miller-Rich 2 — Jun 17, 2026
Susannah Gray 2 — Jun 17, 2026
Jacob Chacko 2 — Jun 17, 2026

Frequently asked questions

Are FDMT insiders buying or selling?

Over the last 12 months 0 insiders made 0 open-market purchases worth $0 and 3 insiders made 3 open-market sales worth $1.98M, a net -$1.98M.

What is the latest insider trade in FDMT?

Kirn David, President and Chief Executive Officer filed a sell (open-market sale) of 58.33K sh worth $753.94K on Oct 5, 2026.

Other biotechnology stocks

All stocks Insider cluster buys Top insider purchases Congress 13F institutions

Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.

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