Stefan Constantin Ionel Insider Trading -- Recent SEC Form 4 Transactions

Stefan Constantin Ionel (CIK 1940928) reported 23 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-03-06). Recent activity: Buy AMPX (110,000 shares), Sell AMPX (25,366 shares), Buy AMPX (90 shares), Buy AMPX (39,600 shares), Sell AMPX (39,690 shares). Source: SEC Form 4.

DateCompanyRoleTypeSharesValue
2026-03-06Amprius Technologies, Inc. (AMPX)Chief Technology OfficerBuy110,000$0
2026-02-24Amprius Technologies, Inc. (AMPX)Chief Technology OfficerSell25,366$257,719
2026-01-30Amprius Technologies, Inc. (AMPX)Chief Technology OfficerBuy90$56
2026-01-30Amprius Technologies, Inc. (AMPX)Chief Technology OfficerBuy39,600$1,980
2026-01-30Amprius Technologies, Inc. (AMPX)Chief Technology OfficerSell39,690$476,280
2026-01-23Amprius Technologies, Inc. (AMPX)Chief Technology OfficerSell73,280$879,360
2026-01-23Amprius Technologies, Inc. (AMPX)Chief Technology OfficerBuy41,563$25,769
2026-01-23Amprius Technologies, Inc. (AMPX)Chief Technology OfficerBuy15,834$792
2026-01-23Amprius Technologies, Inc. (AMPX)Chief Technology OfficerBuy15,883$794
2026-01-23Amprius Technologies, Inc. (AMPX)Chief Technology OfficerBuy253,928$12,696
2026-01-23Amprius Technologies, Inc. (AMPX)Chief Technology OfficerBuy72,795$32,758
2026-01-23Amprius Technologies, Inc. (AMPX)Chief Technology OfficerBuy166,104$8,305
2026-01-23Amprius Technologies, Inc. (AMPX)Chief Technology OfficerSell492,827$5.9M
2026-01-23Amprius Technologies, Inc. (AMPX)Chief Technology OfficerBuy1,600$80
2026-01-23Amprius Technologies, Inc. (AMPX)Chief Technology OfficerSell1,600$19,200
2025-12-15Amprius Technologies, Inc. (AMPX)Chief Technology OfficerBuy125,000$6,250
2025-12-15Amprius Technologies, Inc. (AMPX)Chief Technology OfficerSell198,255$2.1M
2025-11-25Amprius Technologies, Inc. (AMPX)Chief Technology OfficerSell25,024$252,242
2025-08-25Amprius Technologies, Inc. (AMPX)Chief Technology OfficerSell19,159$130,664
2025-05-23Amprius Technologies, Inc. (AMPX)Chief Technology OfficerSell20,366$49,489
2025-03-21Amprius Technologies, Inc. (AMPX)Chief Technology OfficerBuy461,540$0
2025-03-18Amprius Technologies, Inc. (AMPX)Chief Technology OfficerBuy3,471$3,402
2025-02-24Amprius Technologies, Inc. (AMPX)Chief Technology OfficerSell9,066$28,377

Source: SEC Form 4 filings · as of 2026-03-06