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Prime Medicine, Inc.

PRME Net buying

CIK 0001894562 #2975 in the set updated 21 Sep 2026

Bought (120 mo)

$143.00M

out of their own pocket, the only kind of buying there is

Sold (120 mo)

$20.01M

$20.01M on a plan · $0.00 straight out of an exercise

Sold at will

$0.00

0 of 33 sales

Net

+$122.99M

+$143.00M against sales at will

By person

12 insiders · 53 transactions

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

ARCH Venture Partners X, LLC entity

10% owner

$43.60M (4)

—

+$43.60M

6,230,300

3.44%

$20.56M

—

NELSEN ROBERT

Director

$43.60M (4)

—

+$43.60M

6,230,300

3.44%

$20.56M

—

ARCH Venture Partners XII, LLC entity

10% owner

$30.00M (2)

—

+$30.00M

6,230,300

3.44%

$20.56M

—

Cahill Thomas

Director

$6.80M (1)

—

+$6.80M

5,305,679

2.93%

$17.51M

—

GV 2019 GP, L.L.C.

10% owner

$13.60M (1)

$20.01M (33) scheduled

−$6.41M

0.0000%

$0.00

—

GV 2021 GP, L.L.C.

10% owner

$4.95M (1)

—

+$4.95M

3,262,440

1.80%

$10.77M

+85.1%

Liu David R.

10% owner

$163.02K (4)

—

+$163.02K

20,240,945

11.16%

$66.80M

−2.9%

Reine Allan

Chief Executive Officer

$147.15K (1)

—

+$147.15K

125,000

0.0689%

$412.50K

—

LEE ANN L.

Chief Technical Officer

$113.00K (1)

—

+$113.00K

100,000

0.0551%

$330.00K

—

Brudnick Richard

Chief Business Officer

$23.79K (1)

—

+$23.79K

20,000

0.0110%

$66.00K

—

FMR LLC entity

See Remark 1

—

4,228,589

2.33%

$13.95M

—

Gottesdiener Keith Michael

See Remarks

—

2,993,096

1.65%

$9.88M

−0.4%

Individual transactions

Nothing of that kind in this period.

What was left out

Form 4 filings counted 118

Amendments (4/A) skipped 1

Filings about a different issuer 0

Unreadable filings 0

Joint filings 22

Sales on a Rule 10b5-1 plan 33

Sales straight out of an exercise 0

Sales at will 0

Transactions with no price 0

Shares from compensation/vesting 51,692,786

History held since 21 Oct 2022