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Company
▲ Purchases (0 ops.)
▼ Sales (38 ops.)
Latest filing published 12 Mar 2026 for Sera Prognostics, INC., €2,665. Read the official filing
Filing timeline
BuySaleJohn J. Boniface
Insider track record
Disclosed buys
0
Disclosed sells
38
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
John J. Boniface: trading record in brief
John J. Boniface (senior executive) discloses dealings in Sera Prognostics, Inc. to SEC (Form 4). The record holds 46 filings, for trades running from 6 December 2021 to 11 March 2026.
The open-market record consists of 38 sales worth €796k, with no purchase. Outside the open market, there are 4 share grants and 4 option exercises. So far in 2026, the count stands at no purchases and 2 sales.
On 12 March 2026 came the latest disclosure, an open-market sale for €2,665 in Sera Prognostics, Inc. Typically, a trade is published a median of 1 day after it takes place. US insiders must file a Form 4 within two business days of a trade. Sales are harder to read than purchases, since they often meet personal needs such as tax or diversification. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.
Companies and markets linked to John J. Boniface
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations46 total
1,517 shares@ US$2.040.3% of flowClass A Common StockSEC:0001193125-26-104705:0
3,038 shares@ US$1.960.6% of flowClass A Common StockSEC:0001193125-26-100527:0
1,332 shares@ US$3.310.4% of flowClass A Common StockSEC:0001193125-25-316498:0
7,767 shares@ US$2.622.1% of flowClass A Common StockSEC:0001193125-25-277703:0
1,395 shares@ US$3.130.4% of flowClass A Common StockSEC:0000950170-25-114575:0
7,094 shares@ US$2.541.8% of flowClass A Common StockSEC:0001870674-25-000005:0
1,439 shares@ US$1.480.2% of flowClass A Common StockSEC:0000950170-25-085692:0
3,703 shares@ US$1.330.5% of flowClass A Common StockSEC:0000950170-25-085687:0
5,132 shares@ US$2.441.3% of flowClass A Common StockSEC:0000950170-25-068387:0
47,010 shares0Class A Common StockSEC:0000950170-25-035800:0
5,915 shares@ US$4.583.1% of flowClass A Common StockSEC:0000950170-25-021185:0
4,727 shares@ US$7.323.9% of flowClass A Common StockSEC:0000950170-24-125641:0
5,022 shares@ US$7.424.1% of flowClass A Common StockSEC:0001534969-24-000166:0
4,902 shares@ US$9.595.3% of flowClass A Common StockSEC:0001534969-24-000096:0
3,753 shares@ US$9.624.0% of flowClass A Common StockSEC:0001534969-24-000073:0
22,163 shares@ US$9.1022.5% of flowClass A Common StockSEC:0001534969-24-000059:0
21,438 shares@ US$9.5522.8% of flowClass A Common StockSEC:0001534969-24-000061:0
1,664 shares@ US$9.021.7% of flowClass A Common StockSEC:0001534969-24-000035:0
5,665 shares@ US$8.035.1% of flowClass A Common StockSEC:0001534969-24-000011:0
5,000 shares@ US$4.802.7% of flowClass A Common StockSEC:0001534969-23-000124:0
125,000 shares0Class A Common StockSEC:0001534969-23-000117:0
22,100 shares0Class A Common StockSEC:0001534969-23-000016:0
844 shares@ US$0.730.1% of flowClass A Common StockSEC:0001534969-22-000125:0
2,725 shares@ US$2.150.7% of flowClass A Common StockSEC:0001534969-22-000118:0
2,725 shares@ US$1.860.6% of flowClass A Common StockSEC:0001534969-22-000116:0
25 of 46 declarations
