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SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•33 filings

PRLB

Proto Labs Inc

Net sales of $902.6K over the last 3 months

1 seller account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.

How to read this signal

Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.

JSON example

3-month balance

−$902,640

0 buyers · 1 sellers

12-month purchases

$0.00

0 distinct insiders

12-month sales

$3,342,602

3 distinct insiders

Highlighted alerts

4

12 Rule 10b5-1 trades treated as informational

Buying cluster · 30 days

Fewer than three distinct buyers

CEO/CFO purchases · 12 months

No executive purchases found

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Form 4 raw → Raspberry

The value is in what we do not call a signal.

The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.

62
Raw transactions
Everything returned by the filing
16
Voluntary view
P/S trades after deterministic checks
46
Administrative noise
Stored, never alerted
29
10b5-1
Shown as informational
SEC ownership XML facts
Code
F
Shares
1,247
Price
$71.36
Footnotes
—

No filing footnote was attached to this row.

Raspberry interpretation
Informational — no alert

Reason: administrative_code.

Verify in SEC EDGAR

Recent transactions

Voluntary purchases and sales; administrative noise stays hidden.

16 transactions

Schumacher Daniel

Chief Financial Officer

Sale 10b5-1
Shares
5,000
Price
$95.32
Value
$476,605
Open SEC filing

Schumacher Daniel

Chief Financial Officer

Sale 10b5-1
Shares
4,900
Price
$85.21
Value
$417,535
Open SEC filing

Schumacher Daniel

Chief Financial Officer

Sale 10b5-1
Shares
100
Price
$85.00
Value
$8,500
Open SEC filing

WEHRWEIN SVEN

Director

SaleAlert
Shares
500
Price
$78.38
Value
$39,190
Open SEC filing

WEHRWEIN SVEN

Director

SaleAlert
Shares
1,500
Price
$76.91
Value
$115,360
Open SEC filing

Kenison Michael R.

Chief Operations Officer

Sale 10b5-1
Shares
6,643
Price
$70.30
Value
$466,975
Open SEC filing

Kenison Michael R.

Chief Operations Officer

Sale 10b5-1
Shares
3,576
Price
$69.78
Value
$249,542
Open SEC filing

Kenison Michael R.

Chief Operations Officer

Sale 10b5-1
Shares
4,198
Price
$68.70
Value
$288,390
Open SEC filing

Kenison Michael R.

Chief Operations Officer

Sale 10b5-1
Shares
1,613
Price
$67.58
Value
$109,008
Open SEC filing

Kenison Michael R.

Chief Operations Officer

Sale 10b5-1
Shares
7,433
Price
$70.26
Value
$522,252
Open SEC filing

Kenison Michael R.

Chief Operations Officer

Sale 10b5-1
Shares
200
Price
$70.00
Value
$14,000
Open SEC filing

Kenison Michael R.

Chief Operations Officer

Sale 10b5-1
Shares
5,000
Price
$66.46
Value
$332,315
Open SEC filing

Kenison Michael R.

Chief Operations Officer

Sale 10b5-1
Shares
2,500
Price
$60.00
Value
$150,000
Open SEC filing

Kenison Michael R.

Chief Operations Officer

Sale 10b5-1
Shares
3,048
Price
$50.17
Value
$152,931
Open SEC filing

Gawlick Rainer

Director

PurchaseAlert
Shares
1,715
Price
$43.79
Value
$75,105
Open SEC filing

Krishna Suresh

President and CEO

PurchaseAlert
Shares
1,725
Price
$43.51
Value
$75,055
Open SEC filing

“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.