REPLIGEN CORP (RGEN)

Latest Insider Confidence Score

2026Q1

48.0
Bearish

Company insider confidence (by quarter)

2007Q2 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Bvf Partners L P/Il 10% Owner 12,867,400 May 20, 2009
Biotechnology Value Fund L P Other 12,867,400 May 20, 2009
Biotechnology Value Fund II Lp Other 12,867,400 May 20, 2009
Bvf Inc/Il 10% Owner 12,867,400 May 20, 2009
Lampert Mark N 10% Owner 12,867,400 May 20, 2009

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Mar 4, 2026 Mar 5, 2026 Bylund James COO Sell 60.0 +63 0.36% $7.8K
Mar 4, 2026 Mar 5, 2026 KURIYEL RALF Senior VP, R&D Sell 67.5 +83 0.56% $5.3K
Feb 27, 2026 Mar 3, 2026 Bylund James COO Sell 40.0 -3,911 -18.17% $494.3K
Feb 27, 2026 Mar 3, 2026 Loeillot Olivier CEO Sell 42.5 -1,954 -5.44% $245.5K
Mar 2, 2026 Mar 3, 2026 Hunt Anthony Director Sell 37.5 -9,897 -10.00% $1.2M
Feb 27, 2026 Mar 3, 2026 Garland Jason K CFO Sell 42.5 -1,042 -7.79% $131.4K
Feb 27, 2026 Mar 3, 2026 KURIYEL RALF Senior VP, R&D Sell 42.5 -1,367 -8.51% $172.5K
Mar 2, 2026 Mar 3, 2026 Douglass Brian Robb CHIEF PRODUCT OFFICER Sell 46.3 -221 -2.59% $27.6K
Dec 31, 2025 Jan 12, 2026 Douglass Brian Robb CHIEF PRODUCT OFFICER Neutral 90.0 +2,288 36.60% -
Jan 12, 2026 Douglass Brian Robb CHIEF PRODUCT OFFICER Neutral 52.5 - 0.00% -
Dec 17, 2025 Dec 18, 2025 DAWES KAREN A Director Sell 43.8 -275 -0.30% $44.3K
Dec 16, 2025 Dec 17, 2025 MUIR GLENN P Director Neutral 52.5 - 0.00% -
Dec 4, 2025 Dec 8, 2025 Hunt Anthony Director Neutral 27.5 -2,000 -1.98% -
Nov 25, 2025 Nov 26, 2025 Loeillot Olivier CEO Sell 17.5 -7,041 -16.40% $1.2M
Nov 18, 2025 Nov 19, 2025 Bylund James COO Sell 20.0 -2,191 -9.24% $331.3K
Nov 13, 2025 Nov 14, 2025 Hunt Anthony Director Sell 17.5 -20,000 -19.85% $3.1M
Nov 12, 2025 Nov 13, 2025 Hunt Anthony Director Sell 17.5 -25,000 -19.88% $3.9M
Oct 2, 2025 Oct 6, 2025 Loeillot Olivier CEO Sell 42.5 -1,248 -2.82% $181.2K
Sep 25, 2025 Sep 26, 2025 Garland Jason K CFO Sell 42.5 -412 -2.99% $50.1K
Sep 10, 2025 Sep 11, 2025 Hunt Anthony Director Sell 17.5 -29,111 -22.42% $3.5M
Sep 2, 2025 Sep 4, 2025 Hughes Violetta CHIEF ACCOUNTING OFFICER Neutral 90.0 +4,142 100.00% -
Sep 3, 2025 Sep 4, 2025 Loeillot Olivier CEO Sell 40.0 -2,506 -5.37% $291.1K
Sep 4, 2025 Hughes Violetta CHIEF ACCOUNTING OFFICER Neutral 52.5 - 0.00% -
Aug 8, 2025 Aug 12, 2025 Madaus Martin D Director Buy 95.0 +1,800 32.16% $201.8K
May 15, 2025 May 21, 2025 BARTHELEMY NICOLAS Director Neutral 90.0 +973 28.06% -
May 15, 2025 May 19, 2025 Konstantinov Konstantin Director Neutral 90.0 +973 50.65% -
May 15, 2025 May 19, 2025 MUIR GLENN P Director Neutral 82.5 +973 3.01% -
May 15, 2025 May 19, 2025 EGLINTON MANNER CARRIE Director Neutral 90.0 +973 27.86% -
May 15, 2025 May 19, 2025 DAWES KAREN A Director Neutral 77.5 +973 1.07% -
May 15, 2025 May 19, 2025 Madaus Martin D Director Neutral 90.0 +973 21.04% -
May 15, 2025 May 19, 2025 Pax Margaret Director Neutral 90.0 +973 93.29% -
May 15, 2025 May 19, 2025 Mhatre Rohin Director Neutral 90.0 +973 31.94% -
May 15, 2025 May 16, 2025 Hunt Anthony Director Sell 17.5 -26,447 -19.40% $3.3M
Apr 1, 2025 Apr 2, 2025 Bylund James COO Sell 42.5 -454 -1.88% $58.3K
Mar 13, 2025 Mar 20, 2025 Bylund James COO Sell 68.8 +206 0.86% $24.9K
Mar 17, 2025 Mar 19, 2025 Hunt Anthony Director Sell 17.5 -26,756 -16.41% $4.1M
Mar 17, 2025 Mar 18, 2025 Pax Margaret Director Buy 91.3 +250 31.53% $37.7K
Mar 3, 2025 Mar 4, 2025 Garland Jason K CFO Neutral 90.0 +6,435 87.43% -
Mar 3, 2025 Mar 4, 2025 KURIYEL RALF Senior VP, R&D Sell 95.0 +4,440 38.20% $60K
Mar 3, 2025 Mar 4, 2025 Hunt Anthony Director Sell 37.5 -10,142 -6.93% $1.6M
Mar 3, 2025 Mar 4, 2025 Bylund James COO Sell 95.0 +5,196 27.69% $192.5K
Mar 3, 2025 Mar 4, 2025 Loeillot Olivier CEO Neutral 90.0 +14,480 44.95% -
Feb 27, 2025 Feb 28, 2025 Garland Jason K CFO Sell 46.3 -316 -4.12% $49.5K
Feb 27, 2025 Feb 28, 2025 Loeillot Olivier CEO Sell 42.5 -343 -1.05% $53.7K
Feb 27, 2025 Feb 28, 2025 Bylund James COO Sell 42.5 -1,285 -6.41% $201.2K
Feb 27, 2025 Feb 28, 2025 KURIYEL RALF Senior VP, R&D Sell 42.5 -391 -3.25% $61.2K
Feb 27, 2025 Feb 28, 2025 Hunt Anthony Director Sell 40.0 -2,825 -1.89% $442.2K
Feb 24, 2025 Feb 25, 2025 KURIYEL RALF Senior VP, R&D Sell 46.3 -275 -2.24% $45.3K
Feb 24, 2025 Feb 25, 2025 Bylund James COO Sell 42.5 -543 -2.64% $89.5K
Feb 24, 2025 Feb 25, 2025 Hunt Anthony Director Sell 40.0 -2,380 -1.57% $392.1K
Dec 5, 2024 Dec 5, 2024 Hunt Anthony Director Neutral 52.5 - 0.00% -
Nov 21, 2024 Nov 22, 2024 Hunt Anthony Director Sell 17.5 -24,246 -14.78% $3.4M
Nov 20, 2024 Nov 21, 2024 Garland Jason K CFO Sell 46.3 -367 -4.56% $45.3K
Nov 20, 2024 Nov 21, 2024 Loeillot Olivier CEO Sell 42.5 -861 -2.58% $106.3K
Nov 19, 2024 Nov 20, 2024 MUIR GLENN P Director Neutral 52.5 - 0.00% -
Sep 10, 2024 Sep 12, 2024 Hunt Anthony Director Sell 17.5 -22,191 -13.70% $3.2M
Sep 3, 2024 Sep 4, 2024 Loeillot Olivier CEO Neutral 90.0 +17,631 111.69% -
Sep 3, 2024 Sep 4, 2024 Hunt Anthony Director Neutral 27.5 -13,146 -7.96% -
Aug 19, 2024 DAWES KAREN A Director Neutral 52.5 - 0.00% -
Aug 2, 2024 Aug 5, 2024 KURIYEL RALF Senior VP, R&D Sell 17.5 -7,148 -22.53% $1.1M
Aug 1, 2024 Aug 1, 2024 KURIYEL RALF Senior VP, R&D Sell 20.0 -4,465 -18.82% $739.7K
Aug 1, 2024 Aug 1, 2024 MUIR GLENN P Director Neutral 52.5 - 0.00% -
Jun 14, 2024 Jun 14, 2024 Madaus Martin D Director Buy 95.0 +1,615 53.67% $201.8K
Jun 14, 2024 Jun 14, 2024 BARTHELEMY NICOLAS Director Buy 95.0 +1,200 34.60% $150.5K
Jun 14, 2024 Jun 14, 2024 Hunt Anthony CEO Buy 82.5 +2,000 1.23% $248.2K
Jun 14, 2024 Jun 14, 2024 DAWES KAREN A Director Neutral 52.5 - 0.00% -
May 21, 2024 May 22, 2024 Hunt Anthony CEO Sell 17.5 -20,072 -10.95% $3.4M
May 16, 2024 May 20, 2024 Madaus Martin D Director Neutral 90.0 +701 30.37% -
May 16, 2024 May 20, 2024 Mhatre Rohin Director Neutral 90.0 +701 29.89% -
May 16, 2024 May 20, 2024 Pax Margaret Director Neutral 90.0 +701 761.96% -
May 16, 2024 May 20, 2024 Konstantinov Konstantin Director Neutral 90.0 +701 57.46% -
May 16, 2024 May 20, 2024 EGLINTON MANNER CARRIE Director Neutral 90.0 +701 25.11% -
May 16, 2024 May 20, 2024 BARTHELEMY NICOLAS Director Neutral 90.0 +701 25.33% -
May 16, 2024 May 20, 2024 DAWES KAREN A Director Neutral 67.5 +803 0.92% -
May 16, 2024 May 20, 2024 MUIR GLENN P Director Neutral 85.0 +701 9.25% -
May 14, 2024 May 15, 2024 Gebski Christine Officer Sell 42.5 -334 -1.20% $54.6K
May 14, 2024 May 15, 2024 KURIYEL RALF Senior VP, R&D Sell 42.5 -534 -2.20% $87.2K
Apr 2, 2024 Apr 4, 2024 Bylund James COO Sell 42.5 -444 -2.11% $81.2K
Mar 18, 2024 Mar 20, 2024 Hunt Anthony CEO Neutral 27.5 -2,000 -1.08% -
Mar 18, 2024 Mar 19, 2024 Pax Margaret Director Neutral 90.0 +92 100.00% -
Mar 19, 2024 Pax Margaret Director Neutral 52.5 - 0.00% -
Mar 11, 2024 Mar 12, 2024 KURIYEL RALF Senior VP, R&D Sell 20.0 -3,517 -12.66% $681.3K
Mar 8, 2024 Mar 11, 2024 Hunt Anthony CEO Sell 17.5 -16,707 -8.27% $3.3M
Mar 7, 2024 Mar 7, 2024 Hunt Anthony CEO Sell 40.0 -2,867 -1.40% $561.1K
Mar 7, 2024 Mar 7, 2024 KURIYEL RALF Senior VP, R&D Sell 42.5 -386 -1.44% $75.5K
Mar 7, 2024 Mar 7, 2024 Bylund James COO Sell 42.5 -1,206 -5.42% $236K
Mar 7, 2024 Mar 7, 2024 Gebski Christine Officer Sell 42.5 -386 -1.37% $75.5K
Mar 4, 2024 Mar 6, 2024 Hunt Anthony CEO Sell 37.5 -8,386 -3.93% $1.6M
Mar 4, 2024 Mar 6, 2024 Gebski Christine Officer Sell 51.3 -131 -0.46% $25.4K
Mar 4, 2024 Mar 6, 2024 Bylund James COO Sell 48.8 -219 -0.98% $42.5K
Mar 4, 2024 Mar 6, 2024 KURIYEL RALF Senior VP, R&D Sell 51.3 -135 -0.50% $26.2K
Mar 1, 2024 Mar 5, 2024 Bylund James COO Neutral 60.0 +50 0.22% -
Feb 29, 2024 Mar 4, 2024 KURIYEL RALF Senior VP, R&D Sell 47.5 -49 -0.18% $86.9K
Feb 29, 2024 Mar 4, 2024 Hunt Anthony CEO Sell 45.0 -818 -0.38% $637.1K
Feb 29, 2024 Mar 4, 2024 Gebski Christine Officer Sell 42.5 -517 -1.80% $174.6K
Feb 29, 2024 Mar 4, 2024 Bylund James COO Sell 42.5 -416 -1.82% $157.3K
Feb 27, 2024 Feb 29, 2024 Bylund James COO Neutral 90.0 +8,691 61.49% -
Feb 27, 2024 Feb 29, 2024 Hunt Anthony CEO Neutral 90.0 +19,719 10.15% -
Feb 27, 2024 Feb 29, 2024 KURIYEL RALF Senior VP, R&D Neutral 90.0 +3,520 14.94% -
Feb 27, 2024 Feb 29, 2024 Garland Jason K CFO Neutral 90.0 +2,540 46.16% -