Seres Therapeutics, Inc. (MCRB)

Latest Insider Confidence Score

2026Q1

49.2
Bearish

Company insider confidence (by quarter)

2015Q2 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Nestle Sa — 21,879,753 Oct 2, 2024
Societe des Produits Nestle S.A. — 21,879,753 Oct 2, 2024
Afeyan Noubar 10% Owner 11,791,857 Jul 7, 2022
Flagship Pioneering Inc. 10% Owner 11,791,857 Jul 7, 2022
Nutritional Health LTP Fund General Partner LLC 10% Owner 11,791,857 Jul 7, 2022

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Mar 4, 2026 Mar 6, 2026 Kender Richard N Officer Neutral 52.5 - 0.00% ✗ -
Mar 4, 2026 Mar 6, 2026 Henn Matthew R Officer Neutral 52.5 - 0.00% ✗ -
Mar 4, 2026 Mar 6, 2026 Thorell Marella Officer Neutral 52.5 - 0.00% ✗ -
Mar 4, 2026 Mar 6, 2026 DesRosier Thomas Officer Neutral 52.5 - 0.00% ✗ -
Feb 15, 2026 Feb 18, 2026 Shaff Eric D. Director Sell 45.0 -259 -2.19% ✓ $2.2K
Feb 15, 2026 Feb 18, 2026 Young Teresa L. Officer Sell 51.3 -75 -0.87% ✓ $635.3
Feb 15, 2026 Feb 18, 2026 DesRosier Thomas Officer Sell 51.3 -78 -0.99% ✓ $660.7
Feb 15, 2026 Feb 18, 2026 Henn Matthew R Officer Sell 48.8 -89 -1.15% ✓ $753.8
Nov 15, 2025 Nov 18, 2025 Young Teresa L. Officer Sell 28.8 -1,042 -11.03% ✓ $18K
Nov 15, 2025 Nov 18, 2025 Shaff Eric D. Director Sell 50.0 -217 -1.92% ✓ $3.8K
Nov 15, 2025 Nov 18, 2025 DesRosier Thomas Officer Sell 52.5 -76 -0.99% ✓ $1.3K
Nov 15, 2025 Nov 18, 2025 Henn Matthew R Officer Sell 28.8 -1,257 -14.31% ✓ $21.7K
Sep 26, 2025 Sep 30, 2025 Young Teresa L. Officer Neutral 52.5 - 0.00% ✗ -
Sep 26, 2025 Sep 30, 2025 Henn Matthew R Officer Neutral 52.5 - 0.00% ✗ -
Aug 15, 2025 Aug 19, 2025 Shaff Eric D. Director Sell 46.3 -217 -2.00% ✓ $3.6K
Aug 15, 2025 Aug 19, 2025 DesRosier Thomas Officer Sell 50.0 -76 -1.01% ✓ $1.3K
Aug 15, 2025 Aug 19, 2025 Henn Matthew R Officer Sell 50.0 -73 -1.58% ✓ $1.2K
Aug 15, 2025 Aug 19, 2025 Young Teresa L. Officer Sell 50.0 -59 -1.12% ✓ $982.4
Aug 5, 2025 Aug 6, 2025 Rosiello Robert L. Director Neutral 52.5 - 0.00% ✗ -
Aug 6, 2025 Rosiello Robert L. Director Neutral 52.5 - 0.00% ✗ -
Jul 1, 2025 Jul 2, 2025 Ausiello Dennis A Director Neutral 52.5 - 0.00% ✗ -
Jul 1, 2025 Jul 2, 2025 Berenson Stephen Director Neutral 52.5 - 0.00% ✗ -
Jul 1, 2025 Jul 2, 2025 Fraser Claire Director Neutral 52.5 - 0.00% ✗ -
May 15, 2025 May 19, 2025 Young Teresa L. Officer Sell 50.0 -63 -1.23% ✓ $458.6
May 15, 2025 May 19, 2025 Shaff Eric D. CEO Sell 46.3 -220 -2.13% ✓ $1.6K
May 15, 2025 May 19, 2025 DesRosier Thomas Chief Legal Officer and EVP Sell 50.0 -79 -1.07% ✓ $575.1
May 15, 2025 May 19, 2025 Henn Matthew R Officer Sell 50.0 -77 -1.73% ✓ $560.6
Apr 10, 2025 Apr 11, 2025 Biondi Paul Director Neutral 52.5 - 0.00% ✗ -
Apr 10, 2025 Apr 11, 2025 Fraser Claire Director Neutral 52.5 - 0.00% ✗ -
Apr 10, 2025 Apr 11, 2025 Graves Kurt Director Neutral 52.5 - 0.00% ✗ -
Apr 10, 2025 Apr 11, 2025 Berenson Stephen Director Neutral 52.5 - 0.00% ✗ -
Apr 10, 2025 Apr 11, 2025 Kender Richard N Director Neutral 52.5 - 0.00% ✗ -
Apr 10, 2025 Apr 11, 2025 Ausiello Dennis A Director Neutral 52.5 - 0.00% ✗ -
Apr 10, 2025 Apr 11, 2025 Dere Willard H Director Neutral 52.5 - 0.00% ✗ -
Feb 15, 2025 Feb 19, 2025 Young Teresa L. Officer Sell 42.5 -3,338 -3.31% ✓ $2.7K
Feb 15, 2025 Feb 19, 2025 Henn Matthew R. Officer Sell 42.5 -3,953 -4.47% ✓ $3.2K
Feb 15, 2025 Feb 19, 2025 Shaff Eric D. CEO Sell 36.3 -12,726 -6.21% ✓ $10.3K
Feb 15, 2025 Feb 19, 2025 DesRosier Thomas Chief Legal Officer and EVP Sell 46.3 -4,300 -2.93% ✓ $3.5K
Feb 15, 2025 Feb 19, 2025 von Moltke Lisa Officer Sell 33.8 -4,416 -9.97% ✓ $3.6K
Feb 7, 2025 Feb 11, 2025 Thorell Marella Officer Neutral 52.5 - 0.00% ✗ -
Feb 7, 2025 Feb 11, 2025 Young Teresa L. Officer Neutral 52.5 - 0.00% ✗ -
Feb 7, 2025 Feb 11, 2025 Henn Matthew R. Officer Neutral 52.5 - 0.00% ✗ -
Feb 7, 2025 Feb 11, 2025 Shaff Eric D. CEO Neutral 52.5 - 0.00% ✗ -
Feb 7, 2025 Feb 11, 2025 von Moltke Lisa Officer Neutral 52.5 - 0.00% ✗ -
Feb 7, 2025 Feb 11, 2025 DesRosier Thomas Chief Legal Officer and EVP Neutral 52.5 - 0.00% ✗ -
Feb 4, 2025 Feb 6, 2025 Woerle Hans-Juergen Director Neutral 52.5 - 0.00% ✗ -
Feb 6, 2025 Woerle Hans-Juergen Director Neutral 52.5 - 0.00% ✗ -
Nov 15, 2024 Nov 19, 2024 DesRosier Thomas Chief Legal Officer and EVP Sell 52.5 -878 -0.65% ✓ $474.7
Nov 15, 2024 Nov 19, 2024 von Moltke Lisa Officer Sell 46.3 -977 -2.93% ✓ $528.3
Nov 15, 2024 Nov 19, 2024 Shaff Eric D. CEO Sell 50.0 -2,505 -1.45% ✓ $1.4K
Nov 15, 2024 Nov 19, 2024 Young Teresa L. Officer Sell 52.5 -735 -0.81% ✓ $397.6
Nov 15, 2024 Nov 19, 2024 Henn Matthew R. Officer Sell 50.0 -927 -1.18% ✓ $501.2
Oct 27, 2024 Oct 29, 2024 von Moltke Lisa Officer Sell 30.0 -4,334 -12.47% ✓ $3K
Oct 27, 2024 Oct 29, 2024 Henn Matthew R. Officer Sell 42.5 -3,984 -4.99% ✓ $2.7K
Oct 27, 2024 Oct 29, 2024 DesRosier Thomas Chief Legal Officer and EVP Sell 42.5 -4,259 -3.09% ✓ $2.9K
Oct 27, 2024 Oct 29, 2024 Shaff Eric D. CEO Sell 37.5 -8,748 -5.03% ✓ $6K
Oct 27, 2024 Oct 29, 2024 Young Teresa L. Officer Sell 42.5 -2,983 -3.26% ✓ $2.1K
Oct 2, 2024 NESTLE SA 10% Owner Neutral 52.5 - 0.00% ✗ -
Aug 15, 2024 Aug 19, 2024 DesRosier Thomas Chief Legal Officer and EVP Sell 52.5 -873 -0.70% ✓ $733.3
Aug 15, 2024 Aug 19, 2024 von Moltke Lisa Officer Sell 42.5 -973 -4.43% ✓ $817.3
Aug 15, 2024 Aug 19, 2024 Henn Matthew R. Officer Sell 50.0 -923 -1.35% ✓ $775.3
Aug 15, 2024 Aug 19, 2024 Shaff Eric D. CEO Sell 50.0 -2,518 -1.70% ✓ $2.1K
Aug 15, 2024 Aug 19, 2024 Young Teresa L. Officer Sell 52.5 -728 -0.90% ✓ $611.5
Aug 15, 2024 Aug 19, 2024 Ege David S. Officer Sell 50.0 -1,128 -1.43% ✓ $947.5
Aug 3, 2024 Aug 6, 2024 Young Teresa L. Officer Sell 18.8 -24,480 -23.85% ✓ $26.5K
Jul 1, 2024 Jul 3, 2024 Ausiello Dennis A Director Neutral 52.5 - 0.00% ✗ -
Jul 1, 2024 Jul 3, 2024 Graves Kurt Director Neutral 52.5 - 0.00% ✗ -
Jul 1, 2024 Jul 3, 2024 Berenson Stephen Director Neutral 52.5 - 0.00% ✗ -
May 15, 2024 May 17, 2024 von Moltke Lisa Officer Sell 42.5 -939 -4.71% ✓ $882.7
May 15, 2024 May 17, 2024 Shaff Eric D. CEO Sell 50.0 -2,435 -1.70% ✓ $2.3K
May 15, 2024 May 17, 2024 Young Teresa L. Officer Sell 42.5 -703 -3.83% ✓ $660.8
May 15, 2024 May 17, 2024 Henn Matthew R. Officer Sell 50.0 -891 -1.34% ✓ $837.5
May 15, 2024 May 17, 2024 Ege David S. Officer Sell 50.0 -1,090 -1.42% ✓ $1K
May 15, 2024 May 17, 2024 DesRosier Thomas Chief Legal Officer and EVP Sell 52.5 -843 -0.68% ✓ $792.4
Apr 4, 2024 Apr 8, 2024 Graves Kurt Director Neutral 52.5 - 0.00% ✗ -
Apr 4, 2024 Apr 8, 2024 Kender Richard N Director Neutral 52.5 - 0.00% ✗ -
Apr 4, 2024 Apr 8, 2024 Biondi Paul Director Neutral 52.5 - 0.00% ✗ -
Apr 4, 2024 Apr 8, 2024 Fraser Claire Director Neutral 52.5 - 0.00% ✗ -
Apr 4, 2024 Apr 8, 2024 Dere Willard H Director Neutral 52.5 - 0.00% ✗ -
Apr 4, 2024 Apr 8, 2024 Ausiello Dennis A Director Neutral 52.5 - 0.00% ✗ -
Apr 4, 2024 Apr 8, 2024 Berenson Stephen Director Neutral 52.5 - 0.00% ✗ -
Mar 25, 2024 Mar 27, 2024 Thorell Marella Officer Neutral 52.5 - 0.00% ✗ -
Mar 27, 2024 Thorell Marella Officer Neutral 52.5 - 0.00% ✗ -
Feb 15, 2024 Feb 16, 2024 DesRosier Thomas Chief Legal Officer and EVP Sell 42.5 -3,939 -3.16% ✓ $4.3K
Feb 15, 2024 Feb 16, 2024 Shaff Eric D. CEO Sell 32.5 -11,549 -7.86% ✓ $12.5K
Feb 15, 2024 Feb 16, 2024 Henn Matthew R. Officer Sell 37.5 -4,170 -6.17% ✓ $4.5K
Feb 15, 2024 Feb 16, 2024 Young Teresa L. Officer Sell 25.0 -3,374 -17.68% ✓ $3.6K
Feb 15, 2024 Feb 16, 2024 von Moltke Lisa Officer Sell 20.0 -4,400 -20.57% ✓ $4.8K
Feb 15, 2024 Feb 16, 2024 Ege David S. Officer Sell 37.5 -5,010 -6.35% ✓ $5.4K
Feb 15, 2024 Feb 16, 2024 Arkowitz David CFO Sell 46.3 -3,939 -2.11% ✓ $4.3K
Oct 27, 2023 Oct 31, 2023 Cloghessy Paula Officer Sell 37.5 -2,904 -5.98% ✓ $3.9K
Oct 27, 2023 Oct 31, 2023 Shaff Eric D. CEO Sell 36.3 -8,552 -6.89% ✓ $11.5K
Oct 27, 2023 Oct 31, 2023 Young Teresa L. Officer Sell 15.0 -2,907 -25.59% ✓ $3.9K
Oct 27, 2023 Oct 31, 2023 Arkowitz David CFO Sell 46.3 -4,066 -2.26% ✓ $5.5K
Oct 27, 2023 Oct 31, 2023 DesRosier Thomas Chief Legal Officer and EVP Sell 42.5 -4,156 -3.52% ✓ $5.6K
Oct 27, 2023 Oct 31, 2023 Ege David S. Officer Sell 37.5 -4,066 -5.72% ✓ $5.5K
Oct 27, 2023 Oct 31, 2023 von Moltke Lisa Officer Sell 15.0 -4,232 -30.79% ✓ $5.7K
Oct 27, 2023 Oct 31, 2023 Henn Matthew R. Officer Sell 37.5 -3,886 -6.45% ✓ $5.2K
Jun 22, 2023 Jun 23, 2023 Biondi Paul Director Neutral 52.5 - 0.00% ✗ -
Jun 22, 2023 Jun 23, 2023 Ausiello Dennis A Director Neutral 52.5 - 0.00% ✗ -