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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

24
Insider
Date
Role
Action
Shares
Price
Amount
Kirn David
23 Jan 2024
Chief Executive Officer
Sell
5,696
$18.41
$104.85K
VIKING GLOBAL INVESTORS LP
4 Jan 2024
10% owner
Sell indirect
540,000
$19.53
$10.55M
Kirn David
22 Feb 2023
Chief Executive Officer
Sell
16,449
$20.22
$332.66K
Kirn David
21 Feb 2023
Chief Executive Officer
Sell
907
$21.49
$19.49K
Kirn David
21 Feb 2023
Chief Executive Officer
Sell
17,090
$20.93
$357.72K
Kirn David
20 Jan 2023
Chief Executive Officer
Sell
8,625
$20.19
$174.13K
Kirn David
19 Jan 2023
Chief Executive Officer
Sell
10,899
$20.03
$218.35K
Kirn David
16 Dec 2022
Chief Executive Officer
Sell
26,349
$23.39
$616.21K
Kirn David
16 Dec 2022
Chief Executive Officer
Sell
27,595
$22.66
$625.37K
Kirn David
15 Dec 2022
Chief Executive Officer
Sell
1,500
$24.13
$36.20K
Kirn David
15 Dec 2022
Chief Executive Officer
Sell
31,433
$23.56
$740.57K
SCHAFFER DAVID
22 Oct 2021
Director
Sell
1,900
$31.00
$58.89K
SCHAFFER DAVID
21 Oct 2021
Director
Sell
22,820
$31.56
$720.16K
SCHAFFER DAVID
20 Oct 2021
Director
Sell
11,565
$31.02
$358.77K
SCHAFFER DAVID
30 Sep 2021
Director
Sell
4,549
$27.28
$124.08K
SCHAFFER DAVID
30 Sep 2021
Director
Sell
7,836
$26.69
$209.16K
SCHAFFER DAVID
29 Sep 2021
Director
Sell
700
$30.06
$21.04K
SCHAFFER DAVID
29 Sep 2021
Director
Sell
8,365
$29.06
$243.06K
SCHAFFER DAVID
29 Sep 2021
Director
Sell
7,806
$27.99
$218.51K
SCHAFFER DAVID
28 Sep 2021
Director
Sell
100
$32.00
$3.20K
SCHAFFER DAVID
28 Sep 2021
Director
Sell
13,812
$30.52
$421.49K
SCHAFFER DAVID
27 Sep 2021
Director
Sell
100
$34.19
$3.42K
SCHAFFER DAVID
27 Sep 2021
Director
Sell
6,157
$33.51
$206.33K
SCHAFFER DAVID
27 Sep 2021
Director
Sell
13,075
$32.59
$426.08K
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