Chiplock Mark

Officer · AMRC

As of 2026-09-16, Chiplock Mark has 40 Form 4 transactions on record across 1 company — 33 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Pattern in the record: open-market sales filed in March in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $77KIndirect: $0$77Kas of 2026-09-16
  • Direct $77K
  • Indirect $0
AMRCdirect3,375 sh$77K

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

AMRC · 40 trades
2026-09-10: Option exercise, 1,625 sh ($0)2026-09-10: Option exercise, 1,625 sh ($0)2026-03-12: Sale, 273 sh ($7K)2026-03-10: Option exercise, 750 sh ($0)2026-03-10: Option exercise, 750 sh ($0)2026-03-10: Award / grant, 3,500 sh ($0)2026-03-10: Award / grant, 20,000 sh ($0)2025-10-13: Sale, 6,599 sh ($277K)2025-10-13: Sale, 5,000 sh ($225K)2025-10-13: Sale, 5,200 sh ($216K)2025-10-13: Option exercise, 11,799 sh ($158K)2025-10-13: Option exercise, 5,000 sh ($62K)2025-10-13: Option exercise, 5,000 sh ($0)2025-10-13: Option exercise, 11,799 sh ($0)2025-10-09: Sale, 7,100 sh ($284K)2025-10-09: Option exercise, 5,000 sh ($62K)2025-10-09: Option exercise, 2,100 sh ($28K)2025-10-09: Option exercise, 5,000 sh ($0)2025-10-09: Option exercise, 2,100 sh ($0)2025-10-08: Sale, 3,800 sh ($151K)2025-10-08: Option exercise, 3,800 sh ($51K)2025-10-08: Option exercise, 3,800 sh ($0)2025-10-07: Sale, 5,900 sh ($233K)2025-10-07: Option exercise, 5,900 sh ($79K)2025-10-07: Option exercise, 5,900 sh ($0)2025-10-06: Sale, 5,900 sh ($230K)2025-10-06: Option exercise, 5,900 sh ($79K)2025-10-06: Option exercise, 5,900 sh ($0)2025-10-01: Sale, 5,602 sh ($213K)2025-10-01: Option exercise, 5,000 sh ($62K)2025-10-01: Option exercise, 602 sh ($8K)2025-10-01: Option exercise, 5,000 sh ($0)2025-10-01: Option exercise, 602 sh ($0)2025-09-15: Sale, 269 sh ($8K)2025-09-10: Option exercise, 750 sh ($0)2025-09-10: Option exercise, 750 sh ($0)2025-03-19: Sale, 95 sh ($1K)2025-03-17: Option exercise, 276 sh ($0)2025-03-17: Option exercise, 276 sh ($0)2025-03-10: Award / grant, 3,000 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-03-12AMRCSale273 @ $25.31$7K−14.1% of holding1,666Form 4
2025-10-13AMRCSale6,599 @ $41.92$277K−51.6% of holding6,189Form 4
2025-10-13AMRCSale5,000 @ $44.92$225K−80.8% of holding1,189Form 4
2025-10-13AMRCSale5,200 @ $41.57$216K−28.9% of holding12,788Form 4
2025-10-09AMRCSale7,100 @ $39.97$284K−85.7% of holding1,189Form 4
2025-10-08AMRCSale3,800 @ $39.75$151K−76.2% of holding1,189Form 4
2025-10-07AMRCSale5,900 @ $39.51$233K−83.2% of holding1,189Form 4
2025-10-06AMRCSale5,900 @ $38.92$230K−83.2% of holding1,189Form 4
2025-10-01AMRCSale5,602 @ $37.95$213K−82.5% of holding1,189Form 4
2025-09-15AMRCSale269 @ $28.00$8K−18.4% of holding1,189Form 4
2025-03-19AMRCSale95 @ $11.92$1K−11.8% of holding708Form 4
29 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-09-10AMRCOption exercise1,6253,291Form 4
2026-09-10AMRCOption exercise1,6253,375Form 4
2026-03-10AMRCOption exercise7501,939Form 4
2026-03-10AMRCOption exercise7505,000Form 4
2026-03-10AMRCAward / grant3,5005,750Form 4
2026-03-10AMRCAward / grant20,00020,000Form 4
2025-10-13AMRCOption exercise11,79917,988Form 4
2025-10-13AMRCOption exercise5,0006,189Form 4
2025-10-13AMRCOption exercise5,0000Form 4
2025-10-13AMRCOption exercise11,7995,899Form 4
2025-10-09AMRCOption exercise5,0008,289Form 4
2025-10-09AMRCOption exercise2,1003,289Form 4
2025-10-09AMRCOption exercise5,0005,000Form 4
2025-10-09AMRCOption exercise2,10017,698Form 4
2025-10-08AMRCOption exercise3,8004,989Form 4
2025-10-08AMRCOption exercise3,80019,798Form 4
2025-10-07AMRCOption exercise5,9007,089Form 4
2025-10-07AMRCOption exercise5,90023,598Form 4
2025-10-06AMRCOption exercise5,9007,089Form 4
2025-10-06AMRCOption exercise5,90029,498Form 4
2025-10-01AMRCOption exercise5,0006,189Form 4
2025-10-01AMRCOption exercise6026,791Form 4
2025-10-01AMRCOption exercise5,00010,000Form 4
2025-10-01AMRCOption exercise60235,398Form 4
2025-09-10AMRCOption exercise7501,458Form 4
2025-09-10AMRCOption exercise7502,250Form 4
2025-03-17AMRCOption exercise276803Form 4
2025-03-17AMRCOption exercise2763,000Form 4
2025-03-10AMRCAward / grant3,0003,276Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.