4D Molecular Therapeutics, Inc. (FDMT) Insider Trading
Over the last 3 months, FDMT insiders made 0 open-market buys and 11 sales, a net sale of -$3.7M (SEC Form 4). Over the last 6 months, 105 institutions increased and 87 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
11
Net (3m)
-$3.7M
Insider trades by month Buys Sells
Nov
Dec
Mar
Jun
Jul
Aug
Context3-month price +43.7%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 21, 2026 | Kirn Daviddirector, officer: See Remarks | Sell | 25,927 | $16.42 |
| Aug 21, 2026 | Kirn Daviddirector, officer: See Remarks | Option | 50,000 | $4.14 |
| Aug 21, 2026 | Kirn Daviddirector, officer: See Remarks | Sell | 43,149 | $15.36 |
| Aug 17, 2026 | Bizily Scottofficer: Chief Legal Officer | Sell | 1,635 | $12.00 |
| Aug 17, 2026 | Bizily Scottofficer: Chief Legal Officer | Option | 1,635 | $4.14 |
| Aug 5, 2026 | Kirn Daviddirector, officer: See Remarks | Sell | 26,842 | $10.23 |
| Aug 4, 2026 | Kirn Daviddirector, officer: See Remarks | Sell | 12,415 | $10.05 |
| Jul 14, 2026 | Kirn Daviddirector, officer: See Remarks | Sell | 442 | $12.84 |
| Jul 14, 2026 | Kirn Daviddirector, officer: See Remarks | Sell | 42,608 | $12.87 |
| Jul 14, 2026 | Kirn Daviddirector, officer: See Remarks | Sell | 15,283 | $12.01 |
| Jul 2, 2026 | Bizily Scottofficer: Chief Legal Officer | Option | 814 | $4.14 |
| Jul 2, 2026 | Bizily Scottofficer: Chief Legal Officer | Option | 5,752 | $6.49 |
| Jul 2, 2026 | Bizily Scottofficer: Chief Legal Officer | Sell | 6,566 | $14.00 |
| Jun 25, 2026 | Bizily Scottofficer: Chief Legal Officer | Sell | 9,810 | $12.00 |
| Jun 25, 2026 | Bizily Scottofficer: Chief Legal Officer | Option | 9,810 | $4.14 |
| Jun 23, 2026 | Kirn Daviddirector, officer: See Remarks | Sell | 114,746 | $10.47 |
| Jun 18, 2026 | THEUER CHARLESdirector | Grant | 50,000 | $9.42 |
| Jun 18, 2026 | GRAY SUSANNAHdirector | Grant | 50,000 | $9.42 |
| Jun 18, 2026 | MILLIGAN JOHN Fdirector | Grant | 75,000 | $9.42 |
| Jun 18, 2026 | SBLENDORIO GLENNdirector | Grant | 50,000 | $9.42 |
| Jun 18, 2026 | Chacko Jacobdirector | Grant | 50,000 | $9.42 |
| Jun 18, 2026 | Miller-Rich Nancydirector | Grant | 50,000 | $9.42 |
| Jun 18, 2026 | Tomasello Shawndirector | Grant | 50,000 | $9.42 |
| Jun 2, 2026 | Kirn Daviddirector, officer: See Remarks | Sell | 1,922 | $10.02 |
| Mar 27, 2026 | Bizily Scottofficer: Chief Legal Officer | Grant | 217,000 | $9.88 |
| Mar 27, 2026 | Simms Christopher Paulofficer: See Remarks | Grant | 219,000 | $9.88 |
| Mar 27, 2026 | Kirn Daviddirector, officer: Chief Executive Officer | Grant | 750,000 | $9.88 |
| Mar 24, 2026 | Gupta Ashooofficer: VP, Finance and Controller | Option | 865 | — |
| Mar 24, 2026 | Gupta Ashooofficer: VP, Finance and Controller | Sell | 310 | $8.61 |
| Mar 24, 2026 | Gupta Ashooofficer: VP, Finance and Controller | Option | 221 | — |
Source: FDMT SEC Form 4 filings, latest Aug 21, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their FDMT positions over the last 6 months (SEC Form 13F).
Increased
105
New positions
61
Reduced
87
Sold out
25
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| Jupiter Topco LLC | New Position | 5.7M | Aug 14, 2026 |
| JANUS HENDERSON GROUP PLC | Increased | 5.2M | May 18, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | Reduced | 5.0M | May 15, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | Unchanged | 5.0M | Aug 14, 2026 |
| BlackRock, Inc. | Increased | 4.5M | Aug 7, 2026 |
| GOLDMAN SACHS GROUP INC | Increased | 4.3M | Mar 25, 2026 |
| GOLDMAN SACHS GROUP INC | Increased | 4.3M | Aug 14, 2026 |
| GOLDMAN SACHS GROUP INC | Reduced | 4.2M | May 15, 2026 |
| BLACKROCK, INC. | Increased | 4.1M | May 13, 2026 |
| NOVO HOLDINGS A/S | Unchanged | 3.7M | May 15, 2026 |
| Novo Holdings A/S | Reduced | 3.2M | Aug 14, 2026 |
| STATE STREET CORP | Increased | 2.9M | Aug 7, 2026 |
| BVF INC/IL | Reduced | 2.9M | May 15, 2026 |
| BVF INC/IL | Unchanged | 2.9M | Aug 14, 2026 |
| STATE STREET CORP | Increased | 2.7M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.