InsidersTradesSigma
Total declarations
Companies
▲ Purchases (0 ops.)
▼ Sales (4 ops.)
Insider track record
OtherDisclosed buys
0
Disclosed sells
4
T+90 hit rate
40%
T+90 mean return
+16.1%
Across 15 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Explore the complete record of transactions filed by Zhou Rong. Officer active across 2 companies, notably Amphastar Pharmaceuticals, Inc.. Aggregated, 44 disclosures have been recorded. Split: 0 buy · 4 sells. Total volume traded: €728k. History available since 13 May 2021. The latest transaction was disclosed on 6 March 2026 (Retenue fiscale). Regulator: SEC (Form 4). The full history is openly available.
Declarations44 total
1,357 shares@ US$19.340.0018% mcap1.2% of flowCommon StockSEC:0001645326-26-000006:0
1,222 shares@ US$26.661.5% of flowCommon StockSEC:0001415889-25-008525:0
24,692 shares0Common SrockSEC:0001415889-25-007831:0
1,354 shares@ US$28.321.8% of flowCommon StockSEC:0001415889-25-007561:0
1,121 shares@ US$27.621.5% of flowCommon StockSEC:0001415889-25-007204:0
7,000 shares@ US$11.333.9% of flowCommon StockSEC:0001415889-24-029491:0
6,893 shares@ US$14.954.9% of flowCommon StockSEC:0001415889-24-026764:0
3,000 shares@ US$14.952.1% of flowCommon SrockSEC:0001415889-24-023514:0
3,000 shares@ US$48.26156.7% of flowCommon SrockSEC:0001415889-24-023514:1
4,000 shares@ US$14.952.7% of flowCommon SrockSEC:0001415889-24-022373:0
4,000 shares@ US$48.358.8% of flowCommon SrockSEC:0001415889-24-022373:1
1,219 shares@ US$43.052.5% of flowCommon SrockSEC:0001415889-24-008600:0
1,390 shares@ US$46.313.0% of flowCommon SrockSEC:0001415889-24-007359:0
12,521 shares0Common SrockSEC:0001415889-24-007089:0
4,316 shares@ US$14.402.9% of flowCommon StockSEC:0001104659-23-123689:0
4,316 shares@ US$58.5811.8% of flowCommon StockSEC:0001104659-23-123689:1
3,514 shares@ US$16.192.7% of flowCommon StockSEC:0001104659-23-123689:2
3,514 shares@ US$59.589.8% of flowCommon StockSEC:0001104659-23-123689:3
9,651 shares@ US$11.335.1% of flowCommon StockSEC:0001104659-23-073400:0
13,575 shares@ US$14.409.1% of flowCommon StockSEC:0001104659-23-072876:0
5,000 shares@ US$14.403.4% of flowCommon StockSEC:0001104659-23-071286:0
10,000 shares@ US$14.406.8% of flowCommon StockSEC:0001104659-23-062799:0
2,283 shares@ US$37.604.1% of flowCommon StockSEC:0001104659-23-034576:0
2,057 shares@ US$36.843.6% of flowCommon StockSEC:0001104659-23-034072:0
15,129 shares0Common StockSEC:0001104659-23-030094:0
25 of 44 declarations
About Zhou Rong
Zhou Rong is an executive at Amphastar Pharmaceuticals, Inc.
