Zhou Rong (CIK 0001645326)

Latest company ownership

AMPH - Amphastar Pharmaceuticals, Inc.
Role: SENIOR EVP, PRODUCTION CENTER
Shares held
104,668
Last filed at
Mar 12, 2025
Confidence Score
26.8
2025Q4
Confidence Score History
2015Q2 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Dec 17, 2025 Dec 18, 2025 Amphastar Pharmaceuticals, Inc. SENIOR EVP, PRODUCTION CENTER Sell 20.0 -9,787 -3.88% ✗ $256.4K
Mar 15, 2025 Mar 18, 2025 Amphastar Pharmaceuticals, Inc. SENIOR EVP, PRODUCTION CENTER Sell 32.5 -3,189 -0.83% ✗ $87K
Mar 6, 2025 Mar 10, 2025 Amphastar Pharmaceuticals, Inc. SENIOR EVP, PRODUCTION CENTER Sell 36.3 -1,354 -0.61% ✗ $38.3K
Mar 4, 2025 Mar 6, 2025 Amphastar Pharmaceuticals, Inc. SENIOR EVP, PRODUCTION CENTER Sell 36.3 -1,121 -0.50% ✗ $31K
Dec 12, 2024 Dec 16, 2024 Amphastar Pharmaceuticals, Inc. SENIOR EVP, PRODUCTION CENTER Sell 20.0 -15,000 -4.21% ✗ $672.8K
Nov 12, 2024 Nov 13, 2024 Amphastar Pharmaceuticals, Inc. SENIOR EVP, PRODUCTION CENTER Sell 20.0 -6,893 -3.00% ✗ $336.9K
Sep 13, 2024 Sep 17, 2024 Amphastar Pharmaceuticals, Inc. SENIOR EVP, PRODUCTION CENTER Sell 22.5 -3,000 -1.33% ✗ $144.8K
Aug 26, 2024 Aug 27, 2024 Amphastar Pharmaceuticals, Inc. SENIOR EVP, PRODUCTION CENTER Sell 22.5 -4,000 -1.76% ✗ $193.4K
Mar 15, 2024 Mar 19, 2024 Amphastar Pharmaceuticals, Inc. SENIOR EVP, PRODUCTION CENTER Sell 22.5 -5,535 -1.59% ✗ $238.3K
Mar 6, 2024 Mar 8, 2024 Amphastar Pharmaceuticals, Inc. SENIOR EVP, PRODUCTION CENTER Sell 32.5 -1,390 -0.61% ✗ $64.4K
Dec 1, 2023 Dec 5, 2023 Amphastar Pharmaceuticals, Inc. Senior EVP, Production Center Sell 20.0 -7,830 -2.32% ✗ $462.2K
Jun 15, 2023 Jun 20, 2023 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 20.0 -5,000 -2.42% ✗ $258.9K
Jun 13, 2023 Jun 14, 2023 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 22.5 -5,000 -2.53% ✗ $241.2K
May 18, 2023 May 19, 2023 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 20.0 -10,000 -4.94% ✗ $442.1K
Mar 16, 2023 Mar 20, 2023 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 22.5 -4,184 -2.13% ✗ $154.8K
Mar 15, 2023 Mar 17, 2023 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 22.5 -2,057 -1.04% ✗ $75.8K
Mar 16, 2022 Mar 18, 2022 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 22.5 -4,730 -2.53% ✗ $161.8K
Mar 15, 2022 Mar 17, 2022 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 90.0 +12,006 6.86% ✗ $57.4K
Feb 25, 2022 Mar 1, 2022 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 30.0 -13,246 -7.04% ✓ $381.1K
Feb 8, 2022 Feb 9, 2022 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 37.5 -7,000 -3.72% ✓ $187.4K
Jan 10, 2022 Jan 11, 2022 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 22.5 -20,928 -10.35% ✓ $530.7K
Nov 11, 2021 Nov 12, 2021 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 37.5 -7,813 -3.99% ✓ $169.3K
Aug 2, 2021 Aug 4, 2021 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 37.5 -9,123 -4.63% ✓ $193.7K
Jul 26, 2021 Jul 27, 2021 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 37.5 -6,000 -3.05% ✓ $125.2K
Jul 20, 2021 Jul 22, 2021 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 41.3 -5,187 -2.65% ✓ $106.7K
Jun 8, 2021 Jun 10, 2021 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 20.0 -12,912 -6.33% ✗ $250.8K
May 13, 2021 May 17, 2021 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 20.0 -18,119 -5.86% ✗ $357.2K
Mar 16, 2021 Mar 18, 2021 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 95.0 +18,681 10.25% ✗ $60.9K
Mar 15, 2021 Mar 17, 2021 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 36.3 -1,652 -0.90% ✗ $31.6K
Jun 3, 2020 Jun 5, 2020 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 20.0 -22,969 -8.00% ✗ $435.9K
Mar 16, 2020 Mar 18, 2020 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 91.3 +24,388 15.13% ✗ $27.7K
Mar 15, 2020 Mar 17, 2020 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 26.3 -1,653 -1.02% ✗ $23.5K
Jun 14, 2019 Jun 17, 2019 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 52.5 -204 -0.13% ✗ $4K
May 6, 2019 May 7, 2019 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 32.5 -9,600 -5.60% ✓ $218.5K
Mar 26, 2019 Mar 28, 2019 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 36.3 -814 -0.50% ✗ $16.7K
Mar 15, 2019 Mar 18, 2019 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 87.5 +5,891 3.76% ✗ $85.8K
Mar 1, 2019 Mar 4, 2019 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 41.3 -3,200 -2.00% ✓ $80K
Feb 5, 2019 Feb 7, 2019 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 41.3 -4,289 -2.66% ✓ $98.6K
Dec 3, 2018 Dec 6, 2018 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 51.3 -1,089 -0.69% ✓ $24K
Nov 8, 2018 Nov 13, 2018 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 48.8 -2,173 -1.36% ✓ $44.5K
Jun 15, 2018 Jun 18, 2018 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 52.5 -134 -0.08% ✗ $2.3K
Mar 26, 2018 Mar 28, 2018 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 45.0 -535 -0.34% ✗ $10K
Mar 16, 2018 Mar 20, 2018 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 26.3 -2,097 -1.30% ✗ $41.8K
Jun 15, 2017 Jun 16, 2017 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 52.5 -146 -0.10% ✗ $2.4K
Mar 26, 2017 Mar 28, 2017 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 45.0 -568 -0.37% ✗ $7.8K
Mar 16, 2017 Mar 20, 2017 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 86.3 +10,549 7.45% ✗ $17.2K
Dec 5, 2016 Dec 7, 2016 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 58.8 -61 -0.04% ✓ $1.3K
Jun 15, 2016 Jun 17, 2016 Amphastar Pharmaceuticals, Inc. EVP, Production Center Sell 26.3 -1,697 -1.18% ✗ $26.9K
Mar 26, 2016 Mar 29, 2016 Amphastar Pharmaceuticals, Inc. EVP, Production Sell 45.0 -568 -0.40% ✗ $6.8K
Dec 16, 2015 Dec 17, 2015 Amphastar Pharmaceuticals, Inc. EVP, Production Sell 36.3 -772 -0.59% ✗ $11K
Jun 17, 2015 Jun 19, 2015 Amphastar Pharmaceuticals, Inc. EVP, Production Sell 36.3 -1,000 -0.76% ✗ $16.5K