InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (12 ops.)
Insider track record
ExecutiveDisclosed buys
0
Disclosed sells
12
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
Browse the complete record of transactions filed by Stefan Constantin Ionel, Chief Technology Officer. Director active across 1 company, notably Amprius Technologies, Inc.. Cumulatively, 22 filings have been published. Split: 0 buy · 12 sells. Total volume traded: €1.5m. History available since 14 December 2022. The latest transaction was disclosed on 21 August 2026 (Cession). Regulator: SEC (Form 4). All data is free.
Companies and markets linked to Stefan Constantin Ionel
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations22 total
29,681 shares@ US$10.341Common stockSEC:0001940928-26-000024:0
3,208 shares@ US$17.19350.0035% mcap5.2% of flowCommon stockSEC:0001940928-26-000020:0
28,812 shares@ US$14.78840.027% mcap40.1% of flowCommon stockSEC:0001940928-26-000016:0
110,000 shares0Common stockSEC:0001940928-26-000012:0
25,366 shares@ US$10.155517.3% of flowCommon stockSEC:0001940928-26-000009:0
90 shares@ US$0.620.0000% mcap0.4% of flowCommon stockSEC:0001940928-26-000004:0
41,563 shares@ US$0.621.7% of flowCommon stockSEC:0001940928-26-000002:0
125,000 shares@ US$0.050.0004% mcap49.6% of flowCommon stockSEC:0001940928-25-000020:0
25,024 shares@ US$10.081323.9% of flowCommon stockSEC:0001940928-25-000018:0
19,159 shares@ US$6.816211.0% of flowCommon stockSEC:0001940928-25-000014:0
20,366 shares@ US$2.4324.8% of flowCommon stockSEC:0001940928-25-000009:0
461,540 shares0Common stockSEC:0001940928-25-000004:0
3,471 shares@ US$0.980.3% of flowCommon stockSEC:0001940928-25-000003:0
9,066 shares@ US$3.13323.0% of flowCommon stockSEC:0001940928-25-000002:0
8,575 shares@ US$1.96461.7% of flowCommon stockSEC:0001940928-24-000009:0
8,800 shares@ US$1.040.9% of flowCommon stockSEC:0001628280-24-038250:0
5,272 shares@ US$1.32760.7% of flowCommon stockSEC:0001940928-24-000003:0
374,570 shares0Common stockSEC:0001628280-24-011987:0
46,370 shares@ US$3.655290.2% of flowCommon stockSEC:0001940928-23-000011:0
80,000 shares@ US$0.050.4% of flowCommon stockSEC:0001940928-23-000008:0
209 shares@ US$7.200.2% of flowCommon stockSEC:0001940928-23-000002:0
30,000 shares@ US$0.050.2% of flowCommon stockSEC:0001940928-22-000002:0
22 of 22 declarations
About Stefan Constantin Ionel
Stefan Constantin Ionel is Chief Technology Officer at Amprius Technologies, Inc. (XNAS). He has reported 21 filings in total, and the recent filings observed from 2022-12-15 to 2026-05-28 show only sales, for a total amount of EUR 1,223,603.
