Billerbeck Darin G

Director · MRAM

As of 2026-09-17, Billerbeck Darin G has 8 Form 4 transactions on record across 1 company — 7 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.

Reconstructed holdings

Direct: $1.9MIndirect: $0$1.9Mas of 2026-09-17
  • Direct $1.9M
  • Indirect $0
MRAMdirect127,925 sh$1.9M

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

MRAM · 8 trades
2026-05-21: Award / grant, 3,852 sh ($0)2026-05-11: Sale, 30,000 sh ($1.1M)2026-05-11: Option exercise, 30,000 sh ($256K)2026-05-11: Option exercise, 30,000 sh ($0)2025-11-10: Sale, 12,000 sh ($113K)2025-11-10: Option exercise, 12,000 sh ($86K)2025-11-10: Option exercise, 12,000 sh ($0)2025-05-22: Award / grant, 20,325 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-05-11MRAMSale30,000 @ $37.16$1.1M−19.5% of holding124,073Form 4
2025-11-10MRAMSale12,000 @ $9.42$113K−8.8% of holding124,073Form 4
6 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-05-21MRAMAward / grant3,852127,925Form 4
2026-05-11MRAMOption exercise30,000154,073Form 4
2026-05-11MRAMOption exercise30,0000Form 4
2025-11-10MRAMOption exercise12,000136,073Form 4
2025-11-10MRAMOption exercise12,0000Form 4
2025-05-22MRAMAward / grant20,325124,073Form 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.