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4D Molecular Therapeutics, Inc.

FDMT Net buying
CIK 0001650648 #2652 in the set updated 17 Sep 2026
Bought (120 mo)
$51.07M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$28.82M
$7.67M on a plan · $4.37M straight out of an exercise
Sold at will
$16.79M
24 of 92 sales
Net
+$22.25M
+$34.29M against sales at will

By person

14 insiders · 101 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
VIKING GLOBAL INVESTORS LP entity
10% owner
$38.90M (2)
$10.55M (1)
+$28.35M
8,185,828
14.83%
$113.81M
+107.9%
Kirn David
See Remarks
—
$12.53M (28) scheduled
−$12.53M
1,367,486
2.48%
$19.01M
−31.6%
YAO TONY DUNG LING
Director
$9.78M (1)
—
+$9.78M
1,063,744
1.93%
$14.79M
—
SCHAFFER DAVID
Director
—
$3.01M (13)
−$3.01M
901,215
1.63%
$12.53M
−9.9%
MILLIGAN JOHN F
Director
$2.30M (1)
—
+$2.30M
100,000
0.1811%
$1.39M
—
Bizily Scott
Chief Legal Officer
—
$1.89M (41) scheduled
−$1.89M
8,617
0.0156%
$119.80K
−46.6%
Kim Robert Young
Chief Medical Officer
—
$737.79K (4) scheduled
−$737.79K
1,043
0.0019%
$14.50K
−34.6%
Chacko Jacob
Director
—
$100.27K (1) scheduled
−$100.27K
0
0.0000%
$0.00
—
Kamal Fariborz
President & COO
$99.98K (1)
—
+$99.98K
4,347
0.0079%
$60.44K
—
Gupta Ashoo
VP, Finance and Controller
—
$6.73K (4) scheduled
−$6.73K
47,055
0.0852%
$654.21K
+3.1%
RA CAPITAL MANAGEMENT, L.P. entity
10% owner
—
—
—
4,563,211
8.26%
$63.44M
−10.5%
BVF PARTNERS L P/IL entity
See Explanation of Responses
—
—
—
87,911
0.1592%
$1.22M
−98.5%
THEUER CHARLES
Director
—
—
—
41,684
0.0755%
$579.53K
+28.8%
Moretti August J
Chief Financial Officer
—
—
—
11,045
0.0200%
$153.56K
+173.1%

Individual transactions

16
Insider
Date
Role
Action
Shares
Price
Amount
Kirn David
14 Sep 2026
See Remarks
Sold on a plan
58,333
$13.90
$811.00K
Kirn David
4 Aug 2026
See Remarks
Sold on a plan
26,842
$10.23
$274.60K
Kirn David
3 Aug 2026
See Remarks
Sold on a plan
12,415
$10.05
$124.72K
Kirn David
10 Jul 2026
See Remarks
Sold on a plan
442
$12.84
$5.67K
Kirn David
10 Jul 2026
See Remarks
Sold on a plan
15,283
$12.01
$183.56K
Kirn David
9 Jul 2026
See Remarks
Sold on a plan
42,608
$12.87
$548.18K
Kirn David
22 Jun 2026
See Remarks
Sold on a plan
114,746
$10.47
$1.20M
Kirn David
1 Jun 2026
See Remarks
Sold on a plan
1,922
$10.02
$19.26K
Bizily Scott
9 Oct 2025
Chief Legal Officer
Sold on a plan
2,408
$10.00
$24.08K
Bizily Scott
23 Sep 2025
Chief Legal Officer
Sold on a plan
2,407
$8.00
$19.26K
Kirn David
8 Feb 2024
Chief Executive Officer
Sold on a plan
92,001
$27.13
$2.50M
Kirn David
5 Jan 2024
Chief Executive Officer
Sold on a plan
133
$20.11
$2.67K
Kirn David
5 Jan 2024
Chief Executive Officer
Sold on a plan
28,104
$19.56
$549.80K
Kirn David
4 Jan 2024
Chief Executive Officer
Sold on a plan
40,732
$20.31
$827.20K
Kirn David
18 Dec 2023
Chief Executive Officer
Sold on a plan
4,702
$18.13
$85.24K
Kirn David
15 Dec 2023
Chief Executive Officer
Sold on a plan
28,632
$17.27
$494.43K
Show all 101 transactions →

What was left out

Form 4 filings counted 139
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 5
Sales on a Rule 10b5-1 plan 16
Sales straight out of an exercise 52
Sales at will 24
Transactions with no price 0
Shares from compensation/vesting 11,097,993
Sales filed before the plan box existed 22
History held since 17 Dec 2020