Filer Snapshot

William T. Bosway

CIK 0001675953. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity type

Individual

Total filings

16

Latest filing

02 Jan 2024

Industry

n/a

Filing-backed research brief

Start with the SEC data that changes for this CIK

Latest signal: Forms 3/4/5 owner position for ROCK. Each card links back to the PortfolioSavvy page where the filing evidence is closest.

Open owner activity Save page

Largest parsed holding

—

Populates from the latest parsed 13F information table.

Open holding

13D/G large stake

—

No recent parsed 13D/G stake row for this CIK.

Browse 13D/G

Save this filer page

Create a free account to keep this page in your watchlists. After verification, we will save it automatically and open your saved research list.

Create free account and save this filer Already have an account? Sign in and save it
Source: SEC Forms 3/4/5

4 filed on 02 Jan 2024 for CIK 0001675953.

View source filing
Ownership signals CIK-linked ownership evidence from parsed SEC filings. 1 signal
Parsed SEC ownership signals

Parsed SEC ownership coverage

These bars compare filing-backed value available in each disclosure family. Read them as separate lenses, not as one combined ownership total.

Forms 3/4/5 positions$14.77M

Reporting-owner positions with enough filing detail to estimate value.

Forms 3/4/5 position value

3/4/5
$14.77M

Estimated from parsed Forms 3/4/5 when filings include enough share and price data.

Largest linked holdings

Largest issuer positions linked to this CIK across parsed 13F, 13D/G, and Forms 3/4/5 records.

ROCK STRL
How to read these SEC ownership signals
  • Read each filing family separately: 13F portfolios, 13D/G large stakes, and Forms 3/4/5 owner positions answer different SEC disclosure questions.
  • Open the linked research path when you need the filing, CIK, issuer, or CUSIP trail behind a value.
At a glance Names, identifiers, and filing context for this profile. 1 identity field
Business address
3556 Lake Shore Road, P.O. Box 2028, Buffalo, NY, 14219

Filer intelligence

What SEC filings say about William T. Bosway

A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.

Save filer

Quick read

  • Forms 3/4/5 show insider context for ROCK worth $13.87M.

SEC source mix

Counts show available parsed rows, not one combined ownership total.

XML parsed
13F portfolio No rows yet

Quarterly institutional portfolio holdings.

Open
13D/G stakes No rows yet

Beneficial ownership and large-stake disclosures.

Open
Forms 3/4/5 2 rows

Officer, director, and 10% owner holdings or transactions.

Open

Forms 3/4/5 insider context

ROCK

26 May 2026 · President and CEO

$13.87M
Issuer page Owner page

STRL

07 May 2026

$895.2K
Issuer page Owner page

Latest update

What changed recently for William T. Bosway

Ownership report updated

Latest ownership report period: 26 May 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

27 May 2026

Page type

Ownership filings

Latest period

26 May 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 27 May 2026.

Open ownership filings Browse recent public updates

SEC filing record

CIK 0001675953 filing coverage

Start with this filing record, then use the linked ownership pages when parsed 13F, 13D/G, Forms 3/4/5, or facts data exists for this CIK.

SEC filings
16
First seen
04 Jan 2022
Latest filing
02 Jan 2024
Entity
Individual

Observed form types

4

CIK-linked evidence first

William T. Bosway SEC filings William T. Bosway owner filings Open SEC filing index

Latest Filings

Showing the latest 12 of 16 SEC filings for William T. Bosway.

Open full filing history
4

4 filing

Filing date
02 Jan 2024
Reporting date
31 Dec 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
02 Oct 2023
Reporting date
30 Sep 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
05 Jul 2023
Reporting date
30 Jun 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
04 Apr 2023
Reporting date
31 Mar 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
14 Mar 2023
Reporting date
10 Mar 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
06 Mar 2023
Reporting date
02 Mar 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
03 Mar 2023
Reporting date
01 Mar 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
23 Feb 2023
Reporting date
21 Feb 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
03 Jan 2023
Reporting date
31 Dec 2022
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
03 Oct 2022
Reporting date
30 Sep 2022
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
01 Jul 2022
Reporting date
30 Jun 2022
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
01 Apr 2022
Reporting date
31 Mar 2022
SEC evidence
Open document Open filing
Next action
Verify source filing
We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. Manage preferences to update or revoke optional consent for future visits. For more information, see our Privacy Policy .