SEC Insider Transactions from Mazabraud Yann.

Last updated: 2026-04-03 23:05 UTC | Total transactions: 51

Yann Mazabraud, EVP and Head of International at Rhythm Pharmaceuticals ($RYTM), sold about $5.4 million in company shares across five open market transactions over the past year. His most recent sale occurred on April 29, 2025. These sales rank him 1,827th among 11,678 insiders by total value sold, below the average of $8.6 million per insider and 6.4 transactions. Mazabraud made no open market purchases in this period.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
April 1, 2026 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Restricted Stock Units 2500 $0.00 5,000.0000 64,984,361 33.33% 0.00%
April 1, 2026 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Common Stock 12875 $0.00 66,030.0000 64,984,361 24.22% 0.02%
April 1, 2026 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Restricted Stock Units 10375 $0.00 10,375.0000 64,984,361 50.00% 0.02%
March 2, 2026 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International A Stock Options (Right to Buy) 35000 $0.00 35,000.0000 64,984,361 9999.99% 0.05%
Feb. 14, 2026 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Common Stock 10000 $0.00 53,155.0000 64,984,361 23.17% 0.02%
Feb. 14, 2026 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Restricted Stock Units 10000 $0.00 30,000.0000 64,984,361 25.00% 0.02%
Feb. 11, 2026 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International A Restricted Stock Units 23350 $0.00 23,350.0000 64,984,361 9999.99% 0.04%
Feb. 1, 2026 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Restricted Stock Units 5500 $0.00 11,000.0000 64,984,361 33.33% 0.01%
Feb. 1, 2026 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Common Stock 5500 $0.00 43,155.0000 64,984,361 14.61% 0.01%
April 29, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International S Common Stock 6745 $65.08 37,655.0000 63,059,165 15.19% 0.01%
April 14, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Common Stock 10375 $0.00 32,995.0000 63,059,165 45.87% 0.02%
April 15, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Restricted Stock Units 2500 $0.00 7,500.0000 63,059,165 25.00% 0.00%
April 15, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Restricted Stock Units 8905 $0.00 0.0000 63,059,165 100.00% 0.01%
April 14, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Restricted Stock Units 10375 $0.00 20,750.0000 63,059,165 33.33% 0.02%
April 15, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Common Stock 11405 $0.00 44,400.0000 63,059,165 34.57% 0.02%
April 8, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International S Common Stock 8438 $60.37 31,932.0000 63,059,165 20.90% 0.01%
April 8, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International S Common Stock 9312 $61.54 22,620.0000 63,059,165 29.16% 0.01%
March 14, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Stock Options (Right to Buy) 75000 $0.00 25,000.0000 60,995,204 75.00% 0.12%
March 14, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Common Stock 75000 $22.28 115,370.0000 60,995,204 185.78% 0.12%
March 14, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International S Common Stock 19197 $50.79 96,173.0000 60,995,204 16.64% 0.03%
March 14, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International S Common Stock 55803 $51.72 40,370.0000 60,995,204 58.02% 0.09%
Feb. 16, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Restricted Stock Units 5500 $0.00 16,500.0000 60,995,204 25.00% 0.01%
Feb. 16, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Common Stock 5500 $0.00 40,370.0000 60,995,204 15.77% 0.01%
Feb. 14, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International A Restricted Stock Units 40000 $0.00 40,000.0000 60,995,204 9999.99% 0.07%
Feb. 14, 2025 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International A Stock Options (Right to Buy) 60000 $0.00 60,000.0000 60,995,204 9999.99% 0.10%
April 14, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Restricted Stock Units 10375 $0.00 31,125.0000 60,143,558 25.00% 0.02%
April 15, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International D Restricted Stock Units 2031 $0.00 0.0000 60,143,558 100.00% 0.00%
April 15, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International D Restricted Stock Units 6874 $0.00 0.0000 60,143,558 100.00% 0.01%
April 15, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International A Restricted Stock Units 8905 $0.00 8,905.0000 60,143,558 9999.99% 0.01%
April 15, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International A Restricted Stock Units 10000 $0.00 10,000.0000 60,143,558 9999.99% 0.02%
April 14, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Common Stock 10375 $0.00 34,870.0000 60,143,558 22.93% 0.02%
March 19, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International S Common Stock 16000 $39.22 24,495.0000 57,673,128 39.51% 0.03%
Feb. 16, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International A Common Stock 33750 $0.00 40,495.0000 57,673,128 500.37% 0.06%
Feb. 16, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International A Restricted Stock Units 22000 $0.00 22,000.0000 57,673,128 9999.99% 0.04%
Feb. 16, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International A Stock Option (Right to Buy) 67000 $0.00 67,000.0000 57,673,128 9999.99% 0.12%
Feb. 9, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Restricted Stock Units 3438 $0.00 6,874.0000 57,673,128 33.34% 0.01%
Feb. 13, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International S Common Stock 957 $49.84 6,745.0000 57,673,128 12.43% 0.00%
Feb. 12, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International S Common Stock 1594 $51.38 7,702.0000 57,673,128 17.15% 0.00%
Feb. 11, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Common Stock 2031 $0.00 9,296.0000 57,673,128 27.96% 0.00%
Feb. 9, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Common Stock 3438 $0.00 7,265.0000 57,673,128 89.84% 0.01%
Feb. 11, 2024 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Restricted Stock Units 2031 $0.00 2,031.0000 57,673,128 50.00% 0.00%
April 14, 2023 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International D Restricted Stock Units 41500 $0.00 0.0000 56,708,975 100.00% 0.07%
April 14, 2023 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International A Restricted Stock Units 41500 $0.00 41,500.0000 56,708,975 9999.99% 0.07%
Feb. 14, 2023 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International S Common Stock 1177 $27.03 3,827.0000 52,120,701 23.52% 0.00%
Feb. 9, 2023 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International S Common Stock 1563 $27.51 2,973.0000 52,120,701 34.46% 0.00%
Feb. 11, 2023 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Common Stock 2031 $0.00 5,004.0000 52,120,701 68.31% 0.00%
Feb. 11, 2023 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Restricted Stock Units 2031 $0.00 4,062.0000 52,120,701 33.33% 0.00%
Feb. 9, 2023 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International S Common Stock 1548 $27.66 2,988.0000 52,120,701 34.13% 0.00%
Feb. 9, 2023 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Common Stock 3438 $0.00 4,536.0000 52,120,701 313.11% 0.01%
Feb. 9, 2023 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International M Restricted Stock Units 3438 $0.00 10,312.0000 52,120,701 25.00% 0.01%
Feb. 1, 2023 RHYTHM PHARMACEUTICALS, INC. $RYTM Mazabraud Yann EVP, Head of International A Restricted Stock Units 41500 $0.00 41,500.0000 52,120,701 9999.99% 0.08%