Company · Ownership research

4D Molecular Therapeutics, Inc. FDMT

CIK 0001650648

Form 4 transactions dated Sep 1, 2023 to Sep 23, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through 2026-09-03.

Insider purchases & sales

Purchased: $0.00
Sold: $21.40M

Sep 1, 2023 – Sep 3, 2026
Available records · partial months are marked ·

202610 of 13 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2026-09-01	Bizily Scott Chief Legal Officer	Sale10b5-1 footnote	$8.18K 584 shares sold	6.35% sold Direct holding	▾
2026-08-19	Kirn David See Remarks · Director	Sale10b5-1 footnote	$1.09M 69,076 shares sold	7.72% sold Direct holding	▾
2026-08-17	Bizily Scott Chief Legal Officer	Sale10b5-1 footnote	$19.95K 1,635 shares sold	15.95% sold Direct holding	▾
2026-08-13	Bizily Scott Chief Legal Officer	Sale10b5-1 footnote	$19.62K 1,635 shares sold	15.95% sold Direct holding	▾
2026-08-04	Kirn David See Remarks · Director	Sale10b5-1 footnote	$274.60K 26,842 shares sold	3.08% sold Direct holding	▾
2026-08-03	Kirn David See Remarks · Director	Sale10b5-1 footnote	$124.72K 12,415 shares sold	1.40% sold Direct holding	▾
2026-07-10	Kirn David See Remarks · Director	Sale10b5-1 footnote	$189.23K 15,725 shares sold	1.75% sold Direct holding	▾
2026-07-09	Kirn David See Remarks · Director	Sale10b5-1 footnote	$548.18K 42,608 shares sold	4.52% sold Direct holding	▾
2026-06-30	Bizily Scott Chief Legal Officer	Sale10b5-1 footnote	$91.92K 6,566 shares sold	43.25% sold Direct holding	▾
2026-06-23	Bizily Scott Chief Legal Officer	Sale	$117.72K 9,810 shares sold	53.24% sold Direct holding	▾

Showing 13 / 13 record groups in 2026. The complete set is available through the API.

4D Molecular Therapeutics, Inc. · FDMT

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 13 of 13 purchase / sale groups and 27 of 27 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"FDMT","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.