Delisting risk
PFSA · NASDAQ · Medical - Devices

Profusa

Injectable hydrogel biosensors and optical readers for continuous body-chemistry monitoring.

$2.79
After-hours close−0.10 (−3.46%)
At close$2.89(−31.84%)

Breakdown13F · Form 4

Institutions 0.06%713 sharesInsiders 54.81%604.3K sharesOther 45.13%497.6K shares

Shares outstanding 1.10M · Float

Float — provider float is below the insider stake.

A split settled inside the quarter being compared, so quarter-on-quarter change is not shown.

The provider's float is smaller than the insider stake it should exclude, so it is not shown.

Top shareholders13F · 13D/G · Form 4

HolderShares% outstandingFormFiled
Fred S. Knechtel · officer: Chief Financial Officer302.1K27.40%Form 4Aug 19, 2026
Jack E. Stover · officer: Chief Executive Officer302.1K27.40%Form 4Aug 19, 2026

Institutions13F, as of Mar 31, 2026

9 holders · 713 shares

HolderShares% outstandingChg q/qFiled
Citadel Advisors LLC3080.03%May 15, 2026
Geode Capital Management, LLC3070.03%May 15, 2026
Vanguard Capital Management LLC390.00%May 15, 2026
Tower Research Capital LLC (TRC)180.00%May 15, 2026
Vanguard Fiduciary Trust Co170.00%May 8, 2026
Morgan Stanley160.00%May 15, 2026
UBS Group AG70.00%May 5, 2026
Sbi Securities Co., Ltd.00.00%Apr 28, 2026

Beneficial owners13D/G · 5% or more, as filed

No 13D/G filer at 5% or more on record.

InsidersForm 4

InsiderRoleShares% outstandingFiled
Fred S. Knechtelofficer: Chief Financial Officer302.1K27.40%Aug 19, 2026
Jack E. Stoverofficer: Chief Executive Officer302.1K27.40%Aug 19, 2026
Ben Chung-Bin Hwangdirector, officer: Chief Executive Officer1130.01%Jul 21, 2025
Peter O'Rourkedirector140.00%Jan 30, 2026
Lauren Chungdirector40.00%Jan 30, 2026

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Aug 17, 2026
HRT Financial LP10 percent owner
Sale18,395$5.940
Aug 14, 2026
HRT Financial LP10 percent owner
Sale3,163$0.902071,035
Aug 13, 2026
HRT Financial LP10 percent owner
Sale42,411$0.888074,198
Aug 12, 2026
HRT Financial LP10 percent owner
Purchase5,585$0.9640116,609
Aug 11, 2026
HRT Financial LP10 percent owner
Sale2,280$0.9700111,024
Aug 10, 2026
HRT Financial LP10 percent owner
Purchase4,016$0.9440113,304
Aug 7, 2026
HRT Financial LP10 percent owner
Sale924$0.9460109,288
Aug 6, 2026
HRT Financial LP10 percent owner
Purchase926$0.9430110,212
Aug 5, 2026
HRT Financial LP10 percent owner
Sale383$0.9420109,286
Aug 3, 2026
HRT Financial LP10 percent owner
Purchase14,556$0.9580108,301

CongressHouse and Senate disclosures

Not reported.