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Total declarations
Companies
▲ Purchases (0 ops.)
▼ Sales (50 ops.)
Latest filing published 12 Aug 2026 for Amphastar Pharmaceuticals, Inc., €140k.
Filing timeline
BuySaleRichard K. Prins
Insider track record
Disclosed buys
0
Disclosed sells
50
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
Richard K. Prins: trading record in brief
Richard K. Prins (board member) discloses dealings in 2 companies, chiefly IGC Pharma, Inc. and Amphastar Pharmaceuticals, Inc. Between 15 December 2015 and 11 August 2026, the trades on record add up to 215 filings.
The open-market record consists of 50 sales worth €6.5M, with no purchase. Other entries cover 17 share grants and 44 option exercises. Since January 2026: no purchases and 1 sale on the market.
On 12 August 2026 came the latest disclosure, an open-market sale for €140k in Amphastar Pharmaceuticals, Inc. Between a trade and the moment it shows up on SEC (Form 4), the median delay is 5 days. The legal deadline for a Form 4 is two business days after the transaction. Sales are harder to read than purchases, since they often meet personal needs such as tax or diversification. These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.
Companies and markets linked to Richard K. Prins
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations36 total
7,973 shares@ US$20.30Common StockSEC:0001047579-26-000005:0
1,500 shares0Common StockSEC:0001047579-26-000003:0
8,143 shares0Common StockSEC:0001047579-26-000003:1
100,000 shares0Common StockSEC:0001185185-26-001286:0
70,000 shares0Common StockSEC:0001185185-26-001286:1
100,000 shares0Common StockSEC:0001185185-26-000218:0
4,179 shares@ US$16.692.7% of flowCommon StockSEC:0001047579-25-000006:0
4,179 shares@ US$27.10064.4% of flowCommon StockSEC:0001047579-25-000006:1
5,122 shares0Common StockSEC:0001415889-25-015660:0
10,000 shares@ US$19.528.4% of flowCommon StockSEC:0001415889-24-029033:0
2,500 shares@ US$16.691.8% of flowCommon StockSEC:0001415889-24-026756:0
3,915 shares@ US$20.033.2% of flowCommon StockSEC:0001415889-24-021242:0
6,004 shares@ US$20.085.0% of flowCommon StockSEC:0001415889-24-021242:1
7,182 shares@ US$19.525.8% of flowCommon StockSEC:0001415889-24-021242:2
17,101 shares@ US$43.070630.5% of flowCommon StockSEC:0001415889-24-021242:3
200,000 shares0Common StockSEC:0001185185-24-000776:0
3,076 shares0Common StockSEC:0001415889-24-015633:0
100,000 shares0Common StockSEC:0001185185-24-000261:0
4,000 shares@ US$55.86149.3% of flowCommon StockSEC:0001104659-23-119974:0
5,000 shares@ US$52.5011.1% of flowCommon StockSEC:0001104659-23-118700:0
2,000 shares@ US$52.50284.4% of flowCommon StockSEC:0001104659-23-093905:0
4,163 shares@ US$57.38929.9% of flowCommon StockSEC:0001104659-23-092758:0
100,000 shares0Common StockSEC:0001185185-23-000666:0
2,716 shares0Common StockSEC:0001104659-23-069016:0
5,000 shares@ US$16.693.5% of flowCommon StockSEC:0001104659-23-061526:0
25 of 36 declarations
