POULTON JEFFREY V.

PrivateCIK: 1782962
Location

CAMBRIDGE, MA

POULTON JEFFREY V. (Chief Financial Officer) sold 3.3% of their position (2.21K shares) of ALNYLAM PHARMACEUTICALS, INC. on the open market

Open‑market sale worth $722.8K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 10 sales
InsiderPOULTON JEFFREY V.CIK 1782962
Officer· Chief Financial Officer
Since Aug 2019
+13.04K
Net shares
Net buyer
$722.8K
Total sold
10
Open market trades
0B · 10S
12
Total transactions
15.25K acquired · 2.21K disposed
Non-Derivative Transactions11

Common Stock

Direct
A · Award

Shares

+4.77K

Price / share

Trade value

% of position

7.7%
3/2/2026
61.71K66.48K

Common Stock

Direct
S · Sale

Shares

65.00

Price / share

$323.62

Trade value

$21.04K

% of position

0.1%
3/2/2026
66.48K66.41K

Common Stock

Direct
S · Sale

Shares

124.00

Price / share

$324.65

Trade value

$40.26K

% of position

0.2%
3/2/2026
66.41K66.29K

Common Stock

Direct
S · Sale

Shares

356.00

Price / share

$325.63

Trade value

$115.92K

% of position

0.5%
3/2/2026
66.29K65.93K

Common Stock

Direct
S · Sale

Shares

541.00

Price / share

$326.81

Trade value

$176.80K

% of position

0.8%
3/2/2026
65.93K65.39K

Common Stock

Direct
S · Sale

Shares

454.00

Price / share

$327.67

Trade value

$148.76K

% of position

0.7%
3/2/2026
65.39K64.94K

Common Stock

Direct
S · Sale

Shares

138.00

Price / share

$328.71

Trade value

$45.36K

% of position

0.2%
3/2/2026
64.94K64.80K

Common Stock

Direct
S · Sale

Shares

234.00

Price / share

$329.71

Trade value

$77.15K

% of position

0.4%
3/2/2026
64.80K64.57K

Common Stock

Direct
S · Sale

Shares

112.00

Price / share

$330.85

Trade value

$37.06K

% of position

0.2%
3/2/2026
64.57K64.45K

Common Stock

Direct
S · Sale

Shares

129.00

Price / share

$331.93

Trade value

$42.82K

% of position

0.2%
3/2/2026
64.45K64.33K

Common Stock

Direct
S · Sale

Shares

53.00

Price / share

$332.64

Trade value

$17.63K

% of position

0.1%
3/2/2026
64.33K64.27K
Total

Net shares

+2.56K

Net value

-$722.80K

Derivative Transactions1

Stock Option (right to buy)

Direct
A · Award
Converts to

Common Stock

10.48K shares

Shares

+10.48K

Strike price

325.07

Held after

10.48K

Exercisable

3/2/2026
Non-Derivative Holdings (Post-Transaction)1

Common Stock

Indirect
Shares owned57.00
Total
57.00 indirect57.00
Derivative Holdings (Post-Transaction)0
No derivative holdings reported
POULTON JEFFREY V. — Insider Transaction (Form 4) Filed Mar 4, 2026 | Finecho