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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

0.0000%

$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

Insider

Date

Role

Action

Price

Amount

VIKING GLOBAL INVESTORS LP

9 May 2023

10% owner

Buy indirect

850,000

$16.00

$13.60M

YAO TONY DUNG LING

15 Dec 2020

Director

Buy indirect

425,000

$23.00

$9.78M

Kamal Fariborz

15 Dec 2020

See Remarks

Buy

4,347

$23.00

$99.98K

MILLIGAN JOHN F

15 Dec 2020

Director

Buy indirect

100,000

$23.00

$2.30M

VIKING GLOBAL INVESTORS LP

15 Dec 2020

10% owner

Buy indirect

1,100,000

$23.00

$25.30M

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