Dahlquist Karl S.

Officer · ATRC

As of 2026-09-16, Dahlquist Karl S. has 9 Form 4 transactions on record across 1 company — 5 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: $5.0MIndirect: $0$5.0Mas of 2026-09-16
  • Direct $5.0M
  • Indirect $0
ATRCdirect87,319 sh$5.0M

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

ATRC · 9 trades
2026-08-24: Sale, 9,370 sh ($458K)2026-06-30: Award / grant, 636 sh ($15K)2026-03-01: Withheld for tax, 15,687 sh ($490K)2026-03-01: Award / grant, 27,991 sh ($0)2026-03-01: Award / grant, 15,198 sh ($0)2025-06-30: Award / grant, 822 sh ($21K)2025-03-01: Withheld for tax, 9,870 sh ($382K)2025-03-01: Award / grant, 19,359 sh ($0)2025-03-01: Award / grant, 6,579 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-08-24ATRCSale9,370 @ $48.89$458K−9.7% of holding87,319Form 4
8 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-06-30ATRCAward / grant63696,689Form 4
2026-03-01ATRCWithheld for tax15,68796,053Form 4
2026-03-01ATRCAward / grant27,99196,542Form 4
2026-03-01ATRCAward / grant15,198111,740Form 4
2025-06-30ATRCAward / grant82268,551Form 4
2025-03-01ATRCWithheld for tax9,87067,729Form 4
2025-03-01ATRCAward / grant19,35971,020Form 4
2025-03-01ATRCAward / grant6,57977,599Form 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.