MAZABRAUD YANN

PrivateCIK: 1774702
Location

BOSTON, MA

MAZABRAUD YANN (EVP, Head of International) sold 50.6% of their position (57K shares) of RHYTHM PHARMACEUTICALS, INC. on the open market

Open‑market sale worth $6.62M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 6 sales
InsiderMAZABRAUD YANNCIK 1774702
Officer· EVP, Head of International
Since Oct 2020
-57K
Net shares
Net seller
$6.62M
Total sold
6
Open market trades
0B · 6S
8
Total transactions
46.63K acquired · 103.63K disposed
Non-Derivative Transactions7

Common Stock

Direct
M · Option Exercise

Shares

+46.63K

Price / share

$6.80

Trade value

$317.05K

% of position

70.6%
8/12/2026
66.03K112.66K

Common Stock

Direct
S · Sale

Shares

2.30K

Price / share

$111.80

Trade value

$257.14K

% of position

2.0%
8/12/2026
112.66K110.36K

Common Stock

Direct
S · Sale

Shares

1K

Price / share

$112.86

Trade value

$112.86K

% of position

0.9%
8/12/2026
110.36K109.36K

Common Stock

Direct
S · Sale

Shares

3.60K

Price / share

$114.70

Trade value

$413.48K

% of position

3.3%
8/12/2026
109.36K105.75K

Common Stock

Direct
S · Sale

Shares

14.57K

Price / share

$115.43

Trade value

$1.68M

% of position

13.8%
8/12/2026
105.75K91.18K

Common Stock

Direct
S · Sale

Shares

18.21K

Price / share

$116.49

Trade value

$2.12M

% of position

20.0%
8/12/2026
91.18K72.97K

Common Stock

Direct
S · Sale

Shares

17.32K

Price / share

$117.47

Trade value

$2.03M

% of position

23.7%
8/12/2026
72.97K55.66K
Total

Net shares

10.38K

Net value

-$6.30M

Derivative Transactions1

Stock Options (Right to Buy)

Direct
M · Option Exercise
Converts to

Common Stock

46.63K shares

Shares

46.63K

Strike price

6.80

Held after

35.88K

Exercisable

8/12/2026