OTTO ROBERT P

PrivateCIK: 1693863
Location

RAPID CITY, SD

OTTO ROBERT P sold 27.4% of their position (4.11K shares) of BLACK HILLS CORP /SD/ on the open market

Open‑market sale worth $305.0K — a significant reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderOTTO ROBERT PCIK 1693863
IssuerBLACK HILLS CORP /SD/CIK 1130464
Director
Since Jul 2018
-4.11K
Net shares
Net seller
$305.0K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
4.11K disposed
Non-Derivative Transactions1

Common Stock

Direct
S · Sale

Shares

4.11K

Price / share

$74.22

Trade value

$304.97K

% of position

27.4%
5/27/2026
14.99K10.89K
Total

Net shares

4.11K

Net value

-$304.97K

Derivative Transactions0
No derivative transactions reported
Non-Derivative Holdings (Post-Transaction)0
No non-derivative holdings reported
Derivative Holdings (Post-Transaction)1

Phantom Stock Unit

Indirect
Underlying security
Common Stock

Underlying shares

9.76K

Shares owned

9.76K

Exercise price

Expiration

Exercise window

Total

Underlying

9.76K

Owned

9.76K

OTTO ROBERT P — Insider Transaction (Form 4) Filed May 28, 2026 | Finecho