Archie C. Black

CIK 1489095 · CEO · last filed 2026-07-01

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$7.89M

Companies

3

Total Filings

139

Lifetime Open-Market Net

-$119.46M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
GGG Director 0 $76.83 $0 $0 19 2026-07-01
PRLB Director 28,428 $78.49 $2.23M $0 14 2026-05-21
SPSC Director 68,198 $82.93 $5.66M -$119.46M 101 2024-02-23

Recent Filings · Page 9 of 14

139 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2018-08-02 SPSC Sell (S) −10,000 -$853.3K EDGAR
2018-08-02 SPSC Grant (A) +10,972 $0 EDGAR
2018-05-18 PRLB Grant (A) +1,064 $0 EDGAR
2018-05-07 SPSC Grant (A) $0 EDGAR
2018-02-16 SPSC Grant (A) $0 EDGAR
2017-05-22 PRLB Grant (A) +1,586 $0 EDGAR
2017-03-03 SPSC Mixed -$588.4K EDGAR
2017-02-15 SPSC Mixed +22,399 -$254.9K EDGAR
2017-02-09 SPSC Tax (F) −2,619 -$174.2K EDGAR
2017-02-03 SPSC Mixed -$771.5K EDGAR
Showing 8190 of 139
Page 9 of 14
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.