Matthew Tappin Stem, Inc. (STEM) insider trading activity

Matthew Tappin is President, Software Products of STEM, INC.. Currently has a direct ownership of 1,872 shares of STEM, which is worth approximately $29,147. The most recent transaction as insider was on Nov 11, 2025, when has been sold 9,584 shares (Common Stock, par value $0.0001 per share) at a price of $17.7 per share, resulting in proceeds of $169,636. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 1.87K

95.0% 3M change

88.75% 12M change

Total Value Held $29,147

Matthew Tappin Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Nov 11 2025	SELL Open market or private sale	$169,636 $17.7 p/Share	9,584 Reduced 83.66%	1,872 Common Stock, par valu...
Nov 10 2025	SELL Payment of exercise price or tax liability	$98,950 $18.27 p/Share	5,416 Reduced 32.1%	11,456 Common Stock, par valu...
Nov 07 2025	BUY Exercise of conversion of derivative security	-	15,000 Added 47.06%	16,872 Common Stock, par valu...
Jun 16 2025	SELL Open market or private sale	$9,370 $0.45 p/Share	20,823 Reduced 35.73%	37,458 Common Stock, par valu...
May 30 2025	SELL Open market or private sale	$523 $0.45 p/Share	1,164 Reduced 1.96%	58,281 Common Stock, par valu...
May 29 2025	BUY Exercise of conversion of derivative security	-	2,775 Added 4.46%	59,445 Common Stock, par valu...
Mar 12 2025	SELL Open market or private sale	$5,228 $0.4 p/Share	13,070 Reduced 18.74%	56,670 Common Stock, par valu...

Mar 11 2025	BUY Exercise of conversion of derivative security	-	29,167 Added 29.49%	69,740 Common Stock, par valu...
Mar 07 2025	SELL Open market or private sale	$2,370 $0.42 p/Share	5,645 Reduced 12.21%	40,573 Common Stock, par valu...
Mar 06 2025	BUY Exercise of conversion of derivative security	-	13,397 Added 22.47%	46,218 Common Stock, par valu...
Feb 20 2025	SELL Open market or private sale	$5,121 $0.63 p/Share	8,130 Reduced 19.85%	32,821 Common Stock, par valu...
Feb 19 2025	BUY Exercise of conversion of derivative security	-	24,316 Added 37.26%	40,951 Common Stock, par valu...
May 28 2024	SELL Open market or private sale	$1,832 $1.32 p/Share	1,388 Reduced 7.7%	16,635 Common Stock, par valu...
May 24 2024	BUY Exercise of conversion of derivative security	-	2,775 Added 13.34%	18,023 Common Stock, par valu...
Mar 19 2024	SELL Open market or private sale	$48,484 $1.82 p/Share	26,640 Reduced 63.6%	15,248 Common Stock, par valu...
Mar 08 2024	SELL Open market or private sale	$54,528 $2.19 p/Share	24,899 Reduced 37.28%	41,888 Common Stock, par valu...
Mar 05 2024	SELL Open market or private sale	$9,247 $2.41 p/Share	3,837 Reduced 5.43%	66,787 Common Stock, par valu...
Mar 04 2024	SELL Open market or private sale	$14,195 $2.48 p/Share	5,724 Reduced 7.5%	70,624 Common Stock, par valu...
Mar 01 2024	BUY Grant, award, or other acquisition	-	51,539 Added 40.3%	76,348 Common Stock, par valu...
Mar 01 2024	BUY Exercise of conversion of derivative security	-	13,398 Added 35.07%	24,809 Common Stock, par valu...
Feb 20 2024	SELL Open market or private sale	$20,913 $3.05 p/Share	6,857 Reduced 37.54%	11,411 Common Stock, par valu...
Feb 16 2024	SELL Open market or private sale	$33,608 $3.17 p/Share	10,602 Reduced 36.72%	18,268 Common Stock, par valu...
Feb 15 2024	BUY Exercise of conversion of derivative security	-	24,315 Added 45.72%	28,870 Common Stock, par valu...
Feb 14 2024	SELL Open market or private sale	$14,351 $3.15 p/Share	4,556 Reduced 50.01%	4,555 Common Stock, par valu...
Jan 03 2024	SELL Open market or private sale	$18,536 $3.56 p/Share	5,207 Reduced 36.37%	9,111 Common Stock, par valu...

Matthew Tappin

President, Software Products

San Francisco, CA

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