Latest filing published 18 Dec 2025 for Genscript Biotech Corporation.
Filing timeline
BuySaleInsider track record
Closed purchases
Not enough history yet: 1 closed purchase, at least 2 are needed.
Purchases by company
Since each purchase
- -41.6%Entry US$28.39 · Close at T+365 US$16.59
Entry is the close on the day after publication, the first price a reader could act on. Prices in the listing currency. Past moves are not a forecast.
Quelch John: trading record in brief
Quelch John is a declared insider at 7 companies (board member); the most frequent names are Aramark, Alere Inc. and Pepsi Bottling Group Inc. Over a trading history stretching from 1 April 2006 to 15 December 2025, the count stands at 55 filings.
Both buying and selling appear: 6 purchases worth €154k, against 1 sale worth €364k. The totals exclude 2 filings filed without an amount. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay. Outside the open market, there are 41 share grants and 4 option exercises. 2025 to date brings 2 purchases and no sales.
Half of the purchases are above €23k and half below.
On 18 December 2025 came the latest disclosure, an open-market purchase in Genscript Biotech Corporation. Typically, a trade is published a median of 3 days after it takes place. The legal deadline for a Form 4 is two business days after the transaction. 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 Quelch John
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
- 18,157 sharesShareXHKGHKEX:DA20251218E00307Canonical exit: 15 Mar 2026 (T+90)
- 9,000 shares@ US$20.00100.0% of flowCommon Stock, no par value ("Common Stock")SEC:0001628280-25-003199:0
- 21,905 sharesShareXHKGHKEX:DA20250103E00526Canonical exit: 17 Feb 2025 (T+90)
- 1,725 shares0Class A Common StockSEC:0001222423-23-000002:0
- 500 shares@ US$26.281100.0% of flowClass A Common StockSEC:0001222423-22-000004:0Canonical exit: 31 Jul 2022 (T+90)
- 585 shares@ US$42.7114.9% of flowCommon StockSEC:0001584509-19-000191:0
- 76.09 shares0Common StockSEC:0001584509-19-000184:0
- 688 shares@ US$36.3114.5% of flowCommon StockSEC:0001584509-19-000146:0
- 86.22 shares0Common StockSEC:0001584509-19-000137:0
- 818 shares@ US$30.5512.9% of flowCommon StockSEC:0001584509-19-000102:0
- 95.96 shares0Common StockSEC:0001584509-19-000074:0
- 4,908 shares0Common StockSEC:0001584509-19-000024:0
- 856 shares@ US$29.1912.7% of flowCommon StockSEC:0001584509-19-000005:0
- 60.21 shares0Common StockSEC:0001584509-18-000255:0
- 605 shares@ US$41.2911.2% of flowCommon StockSEC:0001584509-18-000194:0
- 51.16 shares0Common StockSEC:0001584509-18-000182:0
- 654 shares@ US$38.219.8% of flowCommon StockSEC:0001584509-18-000143:0
- 52.05 shares0Common StockSEC:0001584509-18-000129:0
- 648 shares@ US$38.556.3% of flowCommon StockSEC:0001584509-18-000084:0
- 47.65 shares0Common StockSEC:0001584509-18-000074:0
- 3,493 shares0Common StockSEC:0001584509-18-000036:0
- 585 shares@ US$42.726.4% of flowCommon StockSEC:0001584509-18-000010:0
- 35.63 shares0Common StockSEC:0001584509-17-000276:0
- 603 shares@ US$41.426.6% of flowCommon StockSEC:0001584509-17-000210:0
- 26,651 sharesCommon StockSEC:0000950142-17-001795:0
25 of 55 declarations
